Sound recording and reproduction
Sound recording and reproduction is an electrical, electronic, or digital inscription and re-creation of sound waves, such as spoken voice, instrumental music, or sound effects. The two main classes of sound recording technology are analog digital recording. Acoustic analog recording is achieved by a microphone diaphragm that senses changes in atmospheric pressure caused by acoustic sound waves and records them as a mechanical representation of the sound waves on a medium such as a phonograph record. In magnetic tape recording, the sound waves vibrate the microphone diaphragm and are converted into a varying electric current, converted to a varying magnetic field by an electromagnet, which makes a representation of the sound as magnetized areas on a plastic tape with a magnetic coating on it. Analog sound reproduction is the reverse process, with a bigger loudspeaker diaphragm causing changes to atmospheric pressure to form acoustic sound waves. Digital recording and reproduction converts the analog sound signal picked up by the microphone to a digital form by the process of sampling.
This lets the audio data be transmitted by a wider variety of media. Digital recording stores audio as a series of binary numbers representing samples of the amplitude of the audio signal at equal time intervals, at a sample rate high enough to convey all sounds capable of being heard. A digital audio signal must be reconverted to analog form during playback before it is amplified and connected to a loudspeaker to produce sound. Prior to the development of sound recording, there were mechanical systems, such as wind-up music boxes and player pianos, for encoding and reproducing instrumental music. Long before sound was first recorded, music was recorded—first by written music notation also by mechanical devices. Automatic music reproduction traces back as far as the 9th century, when the Banū Mūsā brothers invented the earliest known mechanical musical instrument, in this case, a hydropowered organ that played interchangeable cylinders. According to Charles B. Fowler, this "...cylinder with raised pins on the surface remained the basic device to produce and reproduce music mechanically until the second half of the nineteenth century."
The Banū Mūsā brothers invented an automatic flute player, which appears to have been the first programmable machine. Carvings in the Rosslyn Chapel from the 1560s may represent an early attempt to record the Chladni patterns produced by sound in stone representations, although this theory has not been conclusively proved. In the 14th century, a mechanical bell-ringer controlled by a rotating cylinder was introduced in Flanders. Similar designs appeared in barrel organs, musical clocks, barrel pianos, music boxes. A music box is an automatic musical instrument that produces sounds by the use of a set of pins placed on a revolving cylinder or disc so as to pluck the tuned teeth of a steel comb; the fairground organ, developed in 1892, used a system of accordion-folded punched cardboard books. The player piano, first demonstrated in 1876, used a punched paper scroll that could store a long piece of music; the most sophisticated of the piano rolls were hand-played, meaning that the roll represented the actual performance of an individual, not just a transcription of the sheet music.
This technology to record a live performance onto a piano roll was not developed until 1904. Piano rolls were in continuous mass production from 1896 to 2008. A 1908 U. S. Supreme Court copyright case noted that, in 1902 alone, there were between 70,000 and 75,000 player pianos manufactured, between 1,000,000 and 1,500,000 piano rolls produced; the first device that could record actual sounds as they passed through the air was the phonautograph, patented in 1857 by Parisian inventor Édouard-Léon Scott de Martinville. The earliest known recordings of the human voice are phonautograph recordings, called phonautograms, made in 1857, they consist of sheets of paper with sound-wave-modulated white lines created by a vibrating stylus that cut through a coating of soot as the paper was passed under it. An 1860 phonautogram of Au Clair de la Lune, a French folk song, was played back as sound for the first time in 2008 by scanning it and using software to convert the undulating line, which graphically encoded the sound, into a corresponding digital audio file.
On April 30, 1877, French poet, humorous writer and inventor Charles Cros submitted a sealed envelope containing a letter to the Academy of Sciences in Paris explaining his proposed method, called the paleophone. Though no trace of a working paleophone was found, Cros is remembered as the earliest inventor of a sound recording and reproduction machine; the first practical sound recording and reproduction device was the mechanical phonograph cylinder, invented by Thomas Edison in 1877 and patented in 1878. The invention soon spread across the globe and over the next two decades the commercial recording and sale of sound recordings became a growing new international industry, with the most popular titles selling millions of units by the early 1900s; the development of mass-production techniques enabled cylinder recordings to become a major new consumer item in industrial countries and the cylinder was the main consumer format from the late 1880s until around 1910. The next major technical development was the invention of the gramophone record credited to Emile Berliner and patented in 1887, though others had demonstrated simi
An album is a collection of audio recordings issued as a collection on compact disc, audio tape, or another medium. Albums of recorded music were developed in the early 20th century as individual 78-rpm records collected in a bound book resembling a photograph album. Vinyl LPs are still issued, though album sales in the 21st-century have focused on CD and MP3 formats; the audio cassette was a format used alongside vinyl from the 1970s into the first decade of the 2000s. An album may be recorded in a recording studio, in a concert venue, at home, in the field, or a mix of places; the time frame for recording an album varies between a few hours to several years. This process requires several takes with different parts recorded separately, brought or "mixed" together. Recordings that are done in one take without overdubbing are termed "live" when done in a studio. Studios are built to absorb sound, eliminating reverberation, so as to assist in mixing different takes. Recordings, including live, may contain sound effects, voice adjustments, etc..
With modern recording technology, musicians can be recorded in separate rooms or at separate times while listening to the other parts using headphones. Album covers and liner notes are used, sometimes additional information is provided, such as analysis of the recording, lyrics or librettos; the term "album" was applied to a collection of various items housed in a book format. In musical usage the word was used for collections of short pieces of printed music from the early nineteenth century. Collections of related 78rpm records were bundled in book-like albums; when long-playing records were introduced, a collection of pieces on a single record was called an album. An album, in ancient Rome, was a board chalked or painted white, on which decrees and other public notices were inscribed in black, it was from this that in medieval and modern times album came to denote a book of blank pages in which verses, sketches and the like are collected. Which in turn led to the modern meaning of an album as a collection of audio recordings issued as a single item.
In the early nineteenth century "album" was used in the titles of some classical music sets, such as Schumann's Album for the Young Opus 68, a set of 43 short pieces. When 78rpm records came out, the popular 10-inch disc could only hold about three minutes of sound per side, so all popular recordings were limited to around three minutes in length. Classical-music and spoken-word items were released on the longer 12-inch 78s, about 4–5 minutes per side. For example, in 1924, George Gershwin recorded a drastically shortened version of the seventeen-minute Rhapsody in Blue with Paul Whiteman and His Orchestra, it ran for 8m 59s. Deutsche Grammophon had produced an album for its complete recording of the opera Carmen in 1908. German record company Odeon released the Nutcracker Suite by Tchaikovsky in 1909 on 4 double-sided discs in a specially designed package; this practice of issuing albums does not seem to have been taken up by other record companies for many years. By about 1910, bound collections of empty sleeves with a paperboard or leather cover, similar to a photograph album, were sold as record albums that customers could use to store their records.
These albums came in both 12-inch sizes. The covers of these bound books were wider and taller than the records inside, allowing the record album to be placed on a shelf upright, like a book, suspending the fragile records above the shelf and protecting them. In the 1930s, record companies began issuing collections of 78 rpm records by one performer or of one type of music in specially assembled albums with artwork on the front cover and liner notes on the back or inside cover. Most albums included three or four records, with two sides each, making six or eight compositions per album; the 12-inch LP record, or 33 1⁄3 rpm microgroove vinyl record, is a gramophone record format introduced by Columbia Records in 1948. A single LP record had the same or similar number of tunes as a typical album of 78s, it was adopted by the record industry as a standard format for the "album". Apart from minor refinements and the important addition of stereophonic sound capability, it has remained the standard format for vinyl albums.
The term "album" was extended to other recording media such as Compact audio cassette, compact disc, MiniDisc, digital albums, as they were introduced. As part of a trend of shifting sales in the music industry, some observers feel that the early 21st century experienced the death of the album. While an album may contain as many or as few tracks as required, in the United States, The Recording Academy's rules for Grammy Awards state that an album must comprise a minimum total playing time of 15 minutes with at least five distinct tracks or a minimum total playing time of 30 minutes with no minimum track requirement. In the United Kingdom, the criteria for the UK Albums Chart is that a recording counts as an "album" i
Indie rock is a genre of rock music that originated in the United States and United Kingdom in the 1970s. Used to describe independent record labels, the term became associated with the music they produced and was used interchangeably with alternative rock; as grunge and punk revival bands in the US and Britpop bands in the UK broke into the mainstream in the 1990s, it came to be used to identify those acts that retained an outsider and underground perspective. In the 2000s, as a result of changes in the music industry and the growing importance of the Internet, some indie rock acts began to enjoy commercial success, leading to questions about its meaningfulness as a term. Sometimes used interchangeably with "guitar pop rock", in the mid-1980s, the term "indie" began to be used to describe the music produced on punk and post-punk labels; some prominent indie rock record labels were founded during the 1980s. During the 1990s, grunge bands broke into the mainstream, the term "alternative" lost its original counter-cultural meaning.
The term "indie rock" became associated with the bands and genres that remained dedicated to their independent status. By the end of the 1990s, indie rock developed several subgenres and related styles, including lo-fi, noise pop, slowcore, post-rock, math rock. In the 2000s, changes in the music industry and in music technology enabled a new wave of indie rock bands to achieve mainstream success. In the early 2000s, a new group of bands that played a stripped-down, back-to-basics version of guitar rock emerged into the mainstream; the commercial breakthrough from these scenes was led by four bands: The Strokes, The White Stripes, The Hives and The Vines. Emo broke into mainstream culture in the early 2000s. By the end of the decade, the proliferation of indie bands was being referred to as "indie landfill"; the term indie rock, which comes from "independent," describes the small and low-budget labels on which it is released and the do-it-yourself attitude of the bands and artists involved. Although distribution deals are struck with major corporate companies, these labels and the bands they host have attempted to retain their autonomy, leaving them free to explore sounds and subjects of limited appeal to large, mainstream audiences.
The influences and styles of the artists have been diverse, including punk, post-punk and country. The terms "alternative rock" and "indie rock" were used interchangeably in the 1980s, but after many alternative bands followed Nirvana into the mainstream in the early 1990s, "indie rock" began to be used to describe those bands, working in a variety of styles, that did not pursue or achieve commercial success. Aesthetically speaking, indie rock is characterized as having a careful balance of pop accessibility with noise, experimentation with pop music formulae, sensitive lyrics masked by ironic posturing, a concern with "authenticity," and the depiction of a simple guy or girl. Allmusic identifies indie rock as including a number of "varying musical approaches compatible with mainstream tastes". Linked by an ethos more than a musical approach, the indie rock movement encompassed a wide range of styles, from hard-edged, grunge-influenced bands, through do-it-yourself experimental bands like Pavement, to punk-folk singers such as Ani DiFranco.
In fact, there is an everlasting list of subgenres of indie rock. Many countries have developed an extensive local indie scene, flourishing with bands with enough popularity to survive inside the respective country, but unknown elsewhere. However, there are still indie bands that start off locally, but attract an international audience. Indie rock is noted for having a high proportion of female artists compared with preceding rock genres, a tendency exemplified by the development of the feminist-informed Riot Grrrl music of acts like Bikini Kill, Bratmobile, 7 Year Bitch, Team Dresch and Huggy Bear. However, Cortney Harding pointed out that this sense of equality is not reflected in the number of women running indie labels; the BBC documentary Music for Misfits: The Story of Indie pinpoints the birth of indie as the 1977 self-publication of the Spiral Scratch EP by Manchester band Buzzcocks. Although Buzzcocks are classified as a punk band, it has been argued by the BBC and others that the publication of Spiral Scratch independently of a major label led to the coining of the name "indie".
"Indie pop" and "indie" were synonymous. In the mid-1980s, "indie" began to be used to describe the music produced on post-punk labels rather than the labels themselves; the indie rock scene in the US was prefigured by the college rock that dominated college radio playlists, which included key bands like R. E. M. from the US and The Smiths from the UK. These two bands rejected the dominant synthpop of the early 1980s, helped inspire guitar-based jangle pop. In the United States, the term was associated with the abrasive, distortion-heavy sounds of the Pixies, Hüsker Dü, Meat Puppets, Dinosaur Jr. and The Replacements. In the United Kingdom the C86 cassette, a 1986 NME compilation featuring Primal Scream, The Pastels, The Wedding Present and other bands, was a document of the UK indie scene at the start of 1986, it gave its name to the indie pop scene that followed, a major influence on the development of the British indie scene as a whole. Major precursors of indie pop included Postcard bands Josef K and Orange Juice, significant labels included Creation and Glass.
The Jesus and Mary Chain's sound combined the Velvet
Alternative Press (magazine)
Alternative Press is an American music magazine based in Cleveland, Ohio. It provides readers with band interviews, information on upcoming releases, music charts, it was founded in 1985 by Mike Shea, the president. Joe Scarpelli is the general manager. Jason Pettigrew is editor in chief; the first issue of Alternative Press was a photocopied punk rock fanzine, distributed at concerts in Cleveland, Ohio beginning in June 1985 by AP's founder, Mike Shea. He disliked the music, being broadcast on radio stations and believed that bands playing underground music should be given more media coverage "all in the same spot", he said; the name for the magazine, Alternative Press, was not a reference to the alternative rock genre, but referred to the fanzine being an alternative to the local press that wasn't covering the music that Shea felt deserved to be heard. He said, "It has always been about covering music for the misfits". Shea began working on his first issue in his mother's house in Ohio. Shea and a friend, Jimmy Kosicki, targeted the Cleveland neighborhood of Coventry.
"I offset print. I'd walk into these flower shops and Hallmark shops, I'd say'We're going to put out an entertainment publication, it's going to be for kids and only $25.' And they'd look at my high school newspaper and say,'It's professional...' That's how we got enough money to make the first issue". Financial problems plagued AP in its early years. Of the fledgling magazine's struggles in 1986, Shea said: "After the last few punk concerts we promoted that year failed to make any money to help finance the magazine, I had to start begging my mom for money to keep AP going: $1,500 here, $2,500 there. My mom was super-supportive of the whole endeavor, she seemed to enjoy having a bunch of punkers over at all hours of the night putting together issues on her dining-room table and getting spray mount all over her nice tablecloths and on the carpeting, which resulted in our socks getting pulled off as we walked over it". However, by the end of 1986, publication had ceased due to its financial problems, not resuming until the spring of 1988.
With the growth of alternative rock in the early 1990s, circulation began to increase. AP's covers included bands such as Red Hot Chili Peppers and Soundgarden, prior to each band's mainstream success. By 1994, the magazine was doing cover stories on Henry Rollins and Love and Rockets. Norman Wonderly, now the publisher, was credited by Shea as having "made most of these happen and the more Norman got what he wanted, the more artists wanted their cover shoots to look the way Norman wanted, so on, it wasn’t always easy. Did we sometimes protest too much? Maybe, but we were up against a lot. Nobody takes you unless you take yourself and that's what Norman brings to his position to this day". By the early 2000s, after resisting attempts to purchase the magazine, Shea shifted the focus of Alternative Press to the newer punk music associated with the Warped Tour; when asked the magazine's audience, Shea said, "It went from heartfelt emo, to screamo, to post-hardcore, to metalcore… but, there will always be a suburban kid full of angst.
They will always want music". At the time of its 20th anniversary in 2005, AP had grown to an average size of 112 pages per issue averaging between 198 and 220-plus pages a month; the magazine's current monthly columns include "The AP Poll", "In the Studio", "AP&R", "Chalkboard Confessional", "Musician of the Month", "My Favorite Gear", "Next Exit", "Gig Bag", "1000 Words", "Beauty and the Band" and "10 Essential." AP sponsored a radio show aired on XM Radio, a podcast featuring in-depth discussions on various topics with people such as Fall Out Boy's Pete Wentz and Kevin Lyman, a compilation CD, has been a major sponsor of tours including Warped Tour, Taste of Chaos and its own "The AP Tour." Official website The AP Tour
An audio engineer helps to produce a recording or a live performance and adjusting sound sources using equalization and audio effects, mixing and reinforcement of sound. Audio engineers work on the "...technical aspect of recording—the placing of microphones, pre-amp knobs, the setting of levels. The physical recording of any project is done by an engineer... the nuts and bolts." It's a creative hobby and profession where musical instruments and technology are used to produce sound for film, television and video games. Audio engineers set up, sound check and do live sound mixing using a mixing console and a sound reinforcement system for music concerts, sports games and corporate events. Alternatively, audio engineer can refer to a scientist or professional engineer who holds an engineering degree and who designs and builds audio or musical technology working under terms such as acoustical engineering, electronic/electrical engineering or signal processing. Research and development audio engineers invent new technologies and techniques, to enhance the process and art of audio engineering.
They might design acoustical simulations of rooms, shape algorithms for audio signal processing, specify the requirements for public address systems, carry out research on audible sound for video game console manufacturers, other advanced fields of audio engineering. They might be referred to as acoustic engineers. Audio engineers working in research and development may come from backgrounds such as acoustics, computer science, broadcast engineering, acoustical engineering, electrical engineering and electronics. Audio engineering courses at university or college fall into two rough categories: training in the creative use of audio as a sound engineer, training in science or engineering topics, which allows students to apply these concepts while pursuing a career developing audio technologies. Audio training courses give you a good knowledge of technologies and their application to recording studio and sound reinforcement systems, but do not have sufficient mathematical and scientific content to allow you to get a job in research and development in the audio and acoustic industry.
Audio engineers in research and development possess a bachelor's degree, master's degree or higher qualification in acoustics, computer science or another engineering discipline. They might work in acoustic consultancy. Alternatively they might work in audio companies, or other industries that need audio expertise, or carry out research in a university; some positions, such as faculty require a Doctor of Philosophy. In Germany a Toningenieur is an audio engineer who designs and repairs audio systems; the listed subdisciplines are based on PACS coding used by the Acoustical Society of America with some revision. Audio engineers develop audio signal processing algorithms to allow the electronic manipulation of audio signals; these can be processed at the heart of much audio production such as reverberation, Auto-Tune or perceptual coding. Alternatively, the algorithms might carry out echo cancellation on Skype, or identify and categorize audio tracks through Music Information Retrieval. Architectural acoustics is the engineering of achieving a good sound within a room.
For audio engineers, architectural acoustics can be about achieving good speech intelligibility in a stadium or enhancing the quality of music in a theatre. Architectural Acoustic design is done by acoustic consultants. Electroacoustics is concerned with the design of headphones, loudspeakers, sound reproduction systems and recording technologies. Examples of electroacoustic design include portable electronic devices, sound systems in architectural acoustics, surround sound and wave field synthesis in movie theater and vehicle audio. Musical acoustics is concerned with describing the science of music. In audio engineering, this includes the design of electronic instruments such as synthesizers. Psychoacoustics is the scientific study of. At the heart of audio engineering are listeners who are the final arbitrator as to whether an audio design is successful, such as whether a binaural recording sounds immersive; the production, computer processing and perception of speech is an important part of audio engineering.
Ensuring speech is transmitted intelligibly and with high quality. A variety of terms are used to describe audio engineers who install or operate sound recording, sound reinforcement, or sound broadcasting equipment, including large and small format consoles. Terms such as "audio technician," "sound technician," "audio engineer," "audio technologist," "recording engineer," "sound mixer" and "sound engineer" can be ambiguous; such terms can refer to a person working in music production.
A record producer or music producer oversees and manages the sound recording and production of a band or performer's music, which may range from recording one song to recording a lengthy concept album. A producer has varying roles during the recording process, they may gather musical ideas for the project, collaborate with the artists to select cover tunes or original songs by the artist/group, work with artists and help them to improve their songs, lyrics or arrangements. A producer may also: Select session musicians to play rhythm section accompaniment parts or solos Co-write Propose changes to the song arrangements Coach the singers and musicians in the studioThe producer supervises the entire process from preproduction, through to the sound recording and mixing stages, and, in some cases, all the way to the audio mastering stage; the producer may perform these roles themselves, or help select the engineer, provide suggestions to the engineer. The producer may pay session musicians and engineers and ensure that the entire project is completed within the record label's budget.
A record producer or music producer has a broad role in overseeing and managing the recording and production of a band or performer's music. A producer has many roles that may include, but are not limited to, gathering ideas for the project, composing the music for the project, selecting songs or session musicians, proposing changes to the song arrangements, coaching the artist and musicians in the studio, controlling the recording sessions, supervising the entire process through audio mixing and, in some cases, to the audio mastering stage. Producers often take on a wider entrepreneurial role, with responsibility for the budget, schedules and negotiations. Writer Chris Deville explains it, "Sometimes a producer functions like a creative consultant — someone who helps a band achieve a certain aesthetic, or who comes up with the perfect violin part to complement the vocal melody, or who insists that a chorus should be a bridge. Other times a producer will build a complete piece of music from the ground up and present the finished product to a vocalist, like Metro Boomin supplying Future with readymade beats or Jack Antonoff letting Taylor Swift add lyrics and melody to an otherwise-finished “Out Of The Woods.”The artist of an album may not be a record producer or music producer for his/her album.
While both contribute creatively, the official credit of "record producer" may depend on the record contract. Christina Aguilera, for example, did not receive record producer credits until many albums into her career. In the 2010s, the producer role is sometimes divided among up to three different individuals: executive producer, vocal producer and music producer. An executive producer oversees project finances, a vocal producers oversees the vocal production, a music producer oversees the creative process of recording and mixings; the music producer is often a competent arranger, musician or songwriter who can bring fresh ideas to a project. As well as making any songwriting and arrangement adjustments, the producer selects and/or collaborates with the mixing engineer, who takes the raw recorded tracks and edits and modifies them with hardware and software tools to create a stereo or surround sound "mix" of all the individual voices sounds and instruments, in turn given further adjustment by a mastering engineer for the various distribution media.
The producer oversees the recording engineer who concentrates on the technical aspects of recording. Noted producer Phil Ek described his role as "the person who creatively guides or directs the process of making a record", like a director would a movie. Indeed, in Bollywood music, the designation is music director; the music producer's job is to create and mold a piece of music. The scope of responsibility may be one or two songs or an artist's entire album – in which case the producer will develop an overall vision for the album and how the various songs may interrelate. At the beginning of record industry, the producer role was technically limited to record, in one shot, artists performing live; the immediate predecessors to record producers were the artists and repertoire executives of the late 1920s and 1930s who oversaw the "pop" product and led session orchestras. That was the case of Ben Selvin at Columbia Records, Nathaniel Shilkret at Victor Records and Bob Haring at Brunswick Records.
By the end of the 1930s, the first professional recording studios not owned by the major companies were established separating the roles of A&R man and producer, although it wouldn't be until the late 1940s when the term "producer" became used in the industry. The role of producers changed progressively over the 1960s due to technology; the development of multitrack recording caused a major change in the recording process. Before multitracking, all the elements of a song had to be performed simultaneously. All of these singers and musicians had to be assembled in a large studio where the performance was recorded. With multitrack recording, the "bed tracks" (rhythm section accompaniment parts such as the bassline and rhythm guitar could be recorded first, the vocals and solos could be added using as many "takes" as necessary, it was no longer necessary to get all the players in the studio at the same time. A pop band could record their backing tracks one week, a horn section could be brought in a week to add horn shots and punches, a string section could be brought in a week after that.
Multitrack recording had another pro
A music genre is a conventional category that identifies some pieces of music as belonging to a shared tradition or set of conventions. It is to be distinguished from musical form and musical style, although in practice these terms are sometimes used interchangeably. Academics have argued that categorizing music by genre is inaccurate and outdated. Music can be divided into different genres in many different ways; the artistic nature of music means that these classifications are subjective and controversial, some genres may overlap. There are varying academic definitions of the term genre itself. In his book Form in Tonal Music, Douglass M. Green distinguishes between form, he lists madrigal, canzona and dance as examples of genres from the Renaissance period. To further clarify the meaning of genre, Green writes, "Beethoven's Op. 61 and Mendelssohn's Op. 64 are identical in genre – both are violin concertos – but different in form. However, Mozart's Rondo for Piano, K. 511, the Agnus Dei from his Mass, K. 317 are quite different in genre but happen to be similar in form."
Some, like Peter van der Merwe, treat the terms genre and style as the same, saying that genre should be defined as pieces of music that share a certain style or "basic musical language." Others, such as Allan F. Moore, state that genre and style are two separate terms, that secondary characteristics such as subject matter can differentiate between genres. A music genre or subgenre may be defined by the musical techniques, the style, the cultural context, the content and spirit of the themes. Geographical origin is sometimes used to identify a music genre, though a single geographical category will include a wide variety of subgenres. Timothy Laurie argues that since the early 1980s, "genre has graduated from being a subset of popular music studies to being an ubiquitous framework for constituting and evaluating musical research objects". Among the criteria used to classify musical genres are the trichotomy of art and traditional musics. Alternatively, music can be divided on three variables: arousal and depth.
Arousal reflects the energy level of the music. These three variables help explain why many people like similar songs from different traditionally segregated genres. Musicologists have sometimes classified music according to a trichotomic distinction such as Philip Tagg's "axiomatic triangle consisting of'folk','art' and'popular' musics", he explains that each of these three is distinguishable from the others according to certain criteria. The term art music refers to classical traditions, including both contemporary and historical classical music forms. Art music exists in many parts of the world, it emphasizes formal styles that invite technical and detailed deconstruction and criticism, demand focused attention from the listener. In Western practice, art music is considered a written musical tradition, preserved in some form of music notation rather than being transmitted orally, by rote, or in recordings, as popular and traditional music are. Most western art music has been written down using the standard forms of music notation that evolved in Europe, beginning well before the Renaissance and reaching its maturity in the Romantic period.
The identity of a "work" or "piece" of art music is defined by the notated version rather than by a particular performance, is associated with the composer rather than the performer. This is so in the case of western classical music. Art music may include certain forms of jazz, though some feel that jazz is a form of popular music. Sacred Christian music forms an important part of the classical music tradition and repertoire, but can be considered to have an identity of its own; the term popular music refers to any musical style accessible to the general public and disseminated by the mass media. Musicologist and popular music specialist Philip Tagg defined the notion in the light of sociocultural and economical aspects: Popular music, unlike art music, is conceived for mass distribution to large and socioculturally heterogeneous groups of listeners and distributed in non-written form, only possible in an industrial monetary economy where it becomes a commodity and in capitalist societies, subject to the laws of'free' enterprise... it should ideally sell as much as possible.
Popular music is found on most commercial and public service radio stations, in most commercial music retailers and department stores, in movie and television soundtracks. It is noted on the Billboard charts and, in addition to singer-songwriters and composers, it involves music producers more than other genres do; the distinction between classical and popular music has sometimes been blurred in marginal areas such as minimalist music and light classics. Background music for films/movies draws on both traditions. In this respect, music is like fiction, which draws a distinction between literary fiction and popular fiction, not always precise. Country music known as country and western, hillbilly music, is a genre of popular music that originated in the southern United States in the early 1920s; the polka is a Czech dance and genre of dance music familiar throughout Europe and the Americas. Rock music is a broad genre of popular music that originated as "rock and roll" in the United States in the early 1950s, developed into a range of different styles in the 1960s and particular