A music download is the digital transfer of music via the Internet into a device capable of decoding and playing it, such as a home computer, MP3 player or smartphone. This term encompasses both legal downloads and downloads of copyrighted material without permission or legal payment. According to a Nielsen report, downloadable music accounted for 55.9% of all music sales in the US in 2012. By the beginning of 2011, Apple's iTunes Store alone made US$1.1 billion of revenue in the first quarter of its fiscal year. Paid downloads are sometimes encoded with Digital Rights Management that restricts copying the music or playing purchased songs on certain digital audio players, they are always compressed using a lossy codec, which reduces file size and bandwidth requirements. These music resources have been created as a response to expanding technology and needs of customers that wanted easy, quick access to music, their business models respond to the "download revolution" by making legal services attractive for users.
Legal music downloads have faced a number of challenges from artists, record labels and the Recording Industry Association of America. In July 2007, the Universal Music Group decided not to renew their long-term contracts with iTunes; this decision was based upon the issue of pricing of songs, as Universal wanted to be able to charge more or less depending on the artist, a shift away from iTunes' standard—at the time—99 cents per song pricing. Many industry leaders feel that this is only the first of many show-downs between Apple Inc. and the various record labels. According to research by the website TorrentFreak, 38% of Swedish artists support file share downloading and claim that it helps artists in early career stages; the Swedish rock group Lamont has profited from file sharing. The Recording Industry Association of America oversees about 85% of published music production and manufacturing in the United States, they work to protect musicians while supporting the First Amendment rights. Their stated goal is to support artists' creativity and help them not be cheated out of money by illegal downloading.
The Recording Industry Association of America launched its first lawsuits on 8 September 2003, against individuals who illegally downloaded music files from the Kazaa FastTrack network. Two years after it began, the campaign survived at least one major legal challenge; the RIAA said it filed 750 suits in February 2006 against individuals downloading music files without paying for them in hopes of putting an end to Internet music piracy. The RIAA hopes their campaign will force people to respect the copyrights of music labels and minimize the number of illegal downloads; the Official Charts Company began to incorporate downloads in the UK Singles Chart on 17 April 2005, at which time Radio 1 stopped broadcasting the separate download chart, although the chart is still compiled. This was on condition that the song must have a physical media release at the same time. Music downloads have been measured by the Official Charts Company since 2004 and included in the main UK Singles Chart from 2005.
The most downloaded song in the UK is "Happy" by Pharrell Williams with over 1.8 million downloads. In November 2005, the record for the best-selling downloaded single in the United States was held by Gwen Stefani's "Hollaback Girl", which sold over one million downloads, making it the first song to achieve platinum download status; as of July 2012, the record for the best-selling downloaded single in the United States on the iTunes Store is held by The Black Eyed Peas's "I Gotta Feeling", which has sold over 8 million downloads. Soon after his death in 2009, Michael Jackson became the first artist to sell over one million songs downloaded via the Internet in one week. However, Adele marks the most downloads sold by a single song in a week, with "Hello" selling 1.12 million copies in November 2015. Eminem's seventh studio album, became the first album to sell one million digital copies. Beyoncé's self-titled fifth studio album became the fastest-selling album within 24 hours in iTunes history after its release in December 2013.
Within 24 hours of availability, the album sold 430,000 digital copies. Adele's third studio album 25 became the fastest-selling album in a week iTunes history after it was released on 20 November 2015, it sold 1.64 million digital copies in its first week. In 2006, the Recording Industry Association of Japan began issuing certifications for digitally released music in Japan, compiling data from the early 2000s onwards; the best-selling song is Fukushima-based vocal group Greeeen's song "Kiseki", certified for being downloaded four million times between 2008 and 2015, followed by R&B singer Thelma Aoyama's "Soba ni Iru ne" featuring rapper SoulJa, certified for three million downloads between 2008 and 2014. Greeeen's song "Ai Uta" ranks as the third highest certified song, with 2.5 million downloads tracked between 2007 and 2009. Two more songs have sold more than two million paid downloads: Ayaka's "Mikazuki" and Kobukuro's "Tsubomi"; the most successful ringtone in Japan is Moldovan-Romanian band O-Zone's "Dragostea din tei", known locally as "Koi no Maiahi", certified as having four million units sold.
In Japan, only two albums have received digital certifications by the RIAJ. The first was Songs for Japan, a charity compilation album raising profits for the 2011 Tōhoku earthquake and tsunami, certified gold for 100,000 downloa
Slide guitar is a particular technique for playing the guitar, used in blues-style music. The technique involves placing an object against the strings while playing to create glissando effects and deep vibratos, it involves playing the guitar in the traditional position with the use of a tubular "slide" fitted on one of the guitarist's fingers. The slide may be a glass tube like the neck of a bottle; the term "bottleneck" was used to describe this type of playing. The strings are plucked while the slide is moved over the strings to change the pitch; the guitar may be placed on the player's lap and played with a hand-held bar and is referred to as "lap slide guitar" or "lap steel guitar". Creating music with a slide of some type has been traced back to primitive stringed instruments in African culture and to the origin of the steel guitar in Hawaii. Near the beginning of the twentieth century, blues musicians in the Mississippi Delta popularized the bottleneck slide guitar style, the first recording of slide guitar was by Sylvester Weaver in 1923.
Since the 1930s, performers including Robert Nighthawk, Earl Hooker, Elmore James and Muddy Waters popularized slide guitar in the electric blues genre and influenced slide guitarists in the rock genre including the Rolling Stones, Duane Allman and Ry Cooder. Lap slide guitar pioneers include Oscar "Buddy" Woods, "Freddie Roulette; the technique of using a hard object against a plucked string goes back to the "diddley bow" derived from a one-stringed African instrument. The "diddley bow" is believed to be one of the ancestors of the bottleneck style; when sailors from Europe introduced the Spanish guitar to Hawaii in the latter nineteenth century, the Hawaiians slackened some of the strings from the standard tuning to make a chord—this became known as "slack-key" guitar, today referred to as an open tuning. With the "slack-key" the Hawaiians found it easy to play a three-chord song by moving a piece of metal along the fretboard and began to play the instrument across the lap. Near the end of the nineteenth century, a Hawaiian named Joseph Kekuku became proficient in playing this way using a steel bar against the guitar strings.
The bar was called the "steel" and was the source of the name "steel guitar". Kekuku popularized some sources claim he originated the technique, he moved to the United States mainland and became a vaudeville performer performing in Europe for several years. In the first half of the twentieth century, this so-called "Hawaiian guitar" style of playing spread to the US. Sol Hoopii was an influential Hawaiian guitarist who in 1919, at age 17, came to the US mainland from Hawaii as a stow-away on a ship heading for San Francisco. Hoopii's playing became popular in the late 1920s and he recorded songs like "Hula Blues" and "Farewell Blues". According to author Pete Madsen, " would influence a legion of players from rural Mississippi."Most players of blues slide guitar were from the southern US the Mississippi Delta, their music was from an African origin handed down to African-American sharecroppers who sang as they toiled in the fields. The earliest Delta blues musicians were solo singer-guitarists.
W. C. Handy commented on the first time he heard slide guitar in 1903, when a blues player performed in a local train station: "As he played, he pressed a knife on the strings of the guitar in a manner popularised by Hawaiian guitarists who used steel bars; the effect was unforgettable." Blues historian Gérard Herzhaft notes that Tampa Red was one of the first black musicians inspired by the Hawaiian guitarists of the beginning of the century, he managed to adapt their sound to the blues. As an example, Tampa Red, as well as Kokomo Arnold, Casey Bill Weldon and Oscar Woods, adopted the Hawaiian mode of playing longer melodies with the slide instead of playing short riffs as they had done previously. In the early twentieth century, steel guitar playing divided into two streams: bottleneck-style, performed on a traditional Spanish guitar held flat against the body; the bottleneck-style was associated with blues music and was popularized by African-American blues artists. The Mississippi Delta was the home of Robert Johnson, Son House, Charlie Patton, other blues pioneers.
The first known recording of the bottleneck style was in 1923 by Sylvester Weaver, who recorded two instrumentals, "Guitar Blues" and "Guitar Rag". Some of the blues artists who most prominently used the slide include Robert Johnson, Charley Patton, Son House, Bukka White, Mississippi Fred McDowell, Kokomo Arnold, Furry Lewis, Big Joe Williams, Tampa Red and Casey Bill Weldon; when the guitar was electrified in the 1930s, it allowed solos on the instrument to be more audible, thus more prominently featured. In the 1940s, players like Robert Nighthawk and Earl Hooker popularized electric slide guitar; this allowed them switch between slide and fretted guitar playing, an advantage in rhythm accompaniment. Robert Nighthawk recorded extensively in the 1930s as "Robert Lee McCoy" with bluesmen like John Lee "Sonny Boy" Williamson, he performed on acoustic guitar in a style influenced by Tampa Red. Sometime around World War II, after changing his last name to "Nighthawk", he became an early proponent of electric slide guitar and adopted a metal slide.
Nighthawk's sound was clean and smooth, with a light touch of the
Don't Tell Me (Madonna song)
"Don't Tell Me" is a song recorded by American singer Madonna for her eighth studio album, Music. It was released as the second single from the album on November 2000 by Maverick Records. Madonna co-wrote and co-produced the track with Mirwais Ahmadzaï, with additional writing from her brother-in-law, Joe Henry. Henry conceived it as a tango-styled torch song called "Stop". Lyrically, Madonna asks her lover not to control her. "Don't Tell Me" received positive reviews from music critics, who cited the song as one of the album's standouts and praised Madonna's vocals. It was compared to the work of singer Sheryl Crow; the song attained commercial success, reaching the top of the record charts in Canada and New Zealand, as well as the top five in several regions. In the United States, "Don't Tell Me" reached number four on the Billboard Hot 100, tying her with the Beatles as the artist with the second-most top-ten singles in the Hot 100 history; the music video was directed by Jean-Baptiste Mondino and features Madonna as a cowgirl walking down an automated treadmill in front of a projection screen, with cowboys dancing and straddling horses in the backdrop.
The clip received two nominations at the 2001 MTV Video Music Awards, while being nominated for a Grammy Award. The song was included in two of Madonna's concert tours, the Drowned World Tour and the Re-Invention World Tour. In 2014, Madonna appeared on Miley Cyrus' MTV Unplugged special and performed "Don't Tell Me" in a mashup with Cyrus' 2013 song "We Can't Stop". Two years she performed the song on her Madonna: Tears of a Clown show, in Melbourne and Miami. After the critical and commercial success of her seventh studio album, Ray of Light, Madonna had intended to embark on a concert tour in autumn 1999, but due to the delay of her film, The Next Best Thing, the tour was cancelled; the singer became pregnant with her son Rocco, from her relationship with director Guy Ritchie. Wanting to distract herself from the media frenzy, Madonna concentrated on the development of her eighth studio album, Music, she worked with French DJ and producer Mirwais Ahmadzaï on the album, describing it as consisting of "Funky, electronic music blended with futuristic folk.
Lots of jangly guitars and moody melancholic lines". Following the success of the lead single, "Music", "Don't Tell Me" was released as the second single from the album on November 21, 2000, by Maverick Records. A number of remixes for the song were created by Thunderpuss, Richard "Humpty" Vission and Tracy Young. Warner Bros. Records released various renditions on Cd, maxi, 7-inch and 12-inch singles; the Thunderpuss Club Mix had a more house-inspired sound, with spiraling synth pads and keyboard effects. The filtered beats and tweaked keyboard riffs of Humpty Vission's Radio Mix gave Madonna's voice an "underwater" effect, while Young's remix featured a violin breakdown and sonic elements that reminisce Blondie's 1979 hit "Heart of Glass". AllMusic's Jose F. Promis praised the remixes for "transform the country-infused track into an awesome dance extravaganza". Madonna co-wrote and co-produced "Don't Tell Me" with Ahmadzaï, her brother-in-law Joe Henry Henry is credited as an additional songwriter.
Henry had written a tango-styled song titled "Stop", which featured jazz saxophone player Ornette Coleman and Henry singing in "Tom Waits-inspired" vocals. After Henry played the demo for "Stop" to his wife, Madonna's sister Melanie, she sent the track to Madonna; the singer liked the demo and was drawn to the song's lyrics, its "sentiment of defiance, the attitude of it", but did not prefer its musical tone, since it was not in-line with the compositions for Music. Madonna worked with Ahmadzaï and changed the original string arrangement into a stop-time, acoustic guitar and keyboard composition, she recorded it at Ahmadzaï's studio, accompanied by a Martin D-28 guitar to which Ahmadzaï added a stutter effect. Madonna preferred the sound effect over the final melody. Ahmadzaï played the acoustic guitar and keyboards on the track. Mark "Spike" Stent mixed the song and Michel Colombier played the strings. It's the last thing I've written with regard to her It's a line I just don't cross. Musically it's never seemed appropriate...
I thought. I had just moved and set up a studio in the guesthouse of my home and was looking to record anything to make sure my things were working. I needed something to record, so I wrote that song in about 25 minutes just to give myself something to do. I was a little embarrassed by it, it starts off a little spoon-in-June and takes a cryptic turn at the end. According to the sheet music published by Musicnotes.com, "Don't Tell Me" is set in the time signature of common time, with a moderate tempo of 100 beats per minute. It is composed in the key of D major with the singer's vocals ranging from the lower octave of G3 to the higher note of A♭4; the song follows a basic sequence of D–Am–C–G as its chord progression. Ben Greenbank from Sputnikmusic described the track as a "country meets dance" song with trip hop beats, accompanied by acoustic guitar riffs; the song begins with a "plucked" guitar riff in a jagged stop/start beat, with the arpeggios reminiscent of country music. Every fourth beat is followed by a small silence that builds into the chorus.
Rikky Rooksby, author of The Complete Guide to the Music of Madonna, described the track as an "electronica meets country rock" song based on a single four-chord sequence, disguised by the mixing. He found that Madonna's expressive lead vocals were doub
A keyboard instrument is a musical instrument played using a keyboard, a row of levers which are pressed by the fingers. The most common of these are the piano and various electronic keyboards, including synthesizers and digital pianos. Other keyboard instruments include celestas, which are struck idiophones operated by a keyboard, carillons, which are housed in bell towers or belfries of churches or municipal buildings. Today, the term keyboard refers to keyboard-style synthesizers. Under the fingers of a sensitive performer, the keyboard may be used to control dynamics, shading and other elements of expression—depending on the design and inherent capabilities of the instrument. Another important use of the word keyboard is in historical musicology, where it means an instrument whose identity cannot be established. In the 18th century, the harpsichord, the clavichord, the early piano were in competition, the same piece might be played on more than one. Hence, in a phrase such as "Mozart excelled as a keyboard player," the word keyboard is all-inclusive.
The earliest known keyboard instrument was the Ancient Greek hydraulis, a type of pipe organ, invented in the third century BC. The keys were balanced and could be played with a light touch, as is clear from the reference in a Latin poem by Claudian, who says magna levi detrudens murmura tactu... intent, “let him thunder forth as he presses out mighty roarings with a light touch”. From its invention until the fourteenth century, the organ remained the only keyboard instrument; the organ did not feature a keyboard at all, but rather buttons or large levers operated by a whole hand. Every keyboard until the fifteenth century had seven naturals to each octave; the clavichord and the harpsichord appeared during the fourteenth century—the clavichord being earlier. The harpsichord and clavichord were both common until widespread adoption of the piano in the eighteenth century, after which their popularity decreased; the piano was revolutionary because a pianist could vary the volume of the sound by varying the vigor with which each key was struck.
The piano's full name is gravicèmbalo con piano e forte meaning harpsichord with soft and loud but can be shortened to piano-forte, which means soft-loud in Italian. In its current form, the piano is a product of the late nineteenth century, is far removed in both sound and appearance from the "pianos" known to Mozart and Beethoven. In fact, the modern piano is different from the 19th-century pianos used by Liszt and Brahms. See Piano history and musical performance. Keyboard instruments were further developed in the early twentieth century. Early electromechanical instruments, such as the Ondes Martenot, appeared early in the century; this was a important contribution to the keyboard's history. Much effort has gone into creating an instrument that sounds like the piano but lacks its size and weight; the electric piano and electronic piano were early efforts that, while useful instruments in their own right, did not convincingly reproduce the timbre of the piano. Electric and electronic organs were developed during the same period.
More recent electronic keyboard designs strive to emulate the sound of specific make and model pianos using digital samples and computer models. Each acoustic keyboard contains 88 keys. Weighted keys, found on electronic keyboards, are designed to simulate the resistance of a key on an acoustic keyboard, via pressurization. There are 4 types of weighted keys. Keybeds, or non-weighted keys place the weights within the base of the keyboard; the second type, Semi-weighted uses springs, the third type is hammer keys. Most electronic keyboards use the fourth type: graded simulate keys. Weighted keys are made of wood, or metal/wood substitute. Enharmonic keyboard Musical instrument Orchestrina di camera Piano Symphony Young, Percy M. Keyboard Musicians of the World. London: Abelard-Schuman, 1967. N. B.: Concerns celebrated keyboard players and the various such instruments used over the centuries. ISBN 0-200-71497-X The general keyboard in the age of MIDI Renaissance Keyboards on the Heilbrunn Timeline of Art History, The Metropolitan Museum of Art The Pianofortes of Bartolomeo Cristofori on the Heilbrunn Timeline of Art History, The Metropolitan Museum of Art
International Standard Serial Number
An International Standard Serial Number is an eight-digit serial number used to uniquely identify a serial publication, such as a magazine. The ISSN is helpful in distinguishing between serials with the same title. ISSN are used in ordering, interlibrary loans, other practices in connection with serial literature; the ISSN system was first drafted as an International Organization for Standardization international standard in 1971 and published as ISO 3297 in 1975. ISO subcommittee TC 46/SC 9 is responsible for maintaining the standard; when a serial with the same content is published in more than one media type, a different ISSN is assigned to each media type. For example, many serials are published both in electronic media; the ISSN system refers to these types as electronic ISSN, respectively. Conversely, as defined in ISO 3297:2007, every serial in the ISSN system is assigned a linking ISSN the same as the ISSN assigned to the serial in its first published medium, which links together all ISSNs assigned to the serial in every medium.
The format of the ISSN is an eight digit code, divided by a hyphen into two four-digit numbers. As an integer number, it can be represented by the first seven digits; the last code digit, which may be 0-9 or an X, is a check digit. Formally, the general form of the ISSN code can be expressed as follows: NNNN-NNNC where N is in the set, a digit character, C is in; the ISSN of the journal Hearing Research, for example, is 0378-5955, where the final 5 is the check digit, C=5. To calculate the check digit, the following algorithm may be used: Calculate the sum of the first seven digits of the ISSN multiplied by its position in the number, counting from the right—that is, 8, 7, 6, 5, 4, 3, 2, respectively: 0 ⋅ 8 + 3 ⋅ 7 + 7 ⋅ 6 + 8 ⋅ 5 + 5 ⋅ 4 + 9 ⋅ 3 + 5 ⋅ 2 = 0 + 21 + 42 + 40 + 20 + 27 + 10 = 160 The modulus 11 of this sum is calculated. For calculations, an upper case X in the check digit position indicates a check digit of 10. To confirm the check digit, calculate the sum of all eight digits of the ISSN multiplied by its position in the number, counting from the right.
The modulus 11 of the sum must be 0. There is an online ISSN checker. ISSN codes are assigned by a network of ISSN National Centres located at national libraries and coordinated by the ISSN International Centre based in Paris; the International Centre is an intergovernmental organization created in 1974 through an agreement between UNESCO and the French government. The International Centre maintains a database of all ISSNs assigned worldwide, the ISDS Register otherwise known as the ISSN Register. At the end of 2016, the ISSN Register contained records for 1,943,572 items. ISSN and ISBN codes are similar in concept. An ISBN might be assigned for particular issues of a serial, in addition to the ISSN code for the serial as a whole. An ISSN, unlike the ISBN code, is an anonymous identifier associated with a serial title, containing no information as to the publisher or its location. For this reason a new ISSN is assigned to a serial each time it undergoes a major title change. Since the ISSN applies to an entire serial a new identifier, the Serial Item and Contribution Identifier, was built on top of it to allow references to specific volumes, articles, or other identifiable components.
Separate ISSNs are needed for serials in different media. Thus, the print and electronic media versions of a serial need separate ISSNs. A CD-ROM version and a web version of a serial require different ISSNs since two different media are involved. However, the same ISSN can be used for different file formats of the same online serial; this "media-oriented identification" of serials made sense in the 1970s. In the 1990s and onward, with personal computers, better screens, the Web, it makes sense to consider only content, independent of media; this "content-oriented identification" of serials was a repressed demand during a decade, but no ISSN update or initiative occurred. A natural extension for ISSN, the unique-identification of the articles in the serials, was the main demand application. An alternative serials' contents model arrived with the indecs Content Model and its application, the digital object identifier, as ISSN-independent initiative, consolidated in the 2000s. Only in 2007, ISSN-L was defined in the
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
An electric guitar is a guitar that uses one or more pickups to convert the vibration of its strings into electrical signals. The vibration occurs when a guitar player strums, fingerpicks, slaps or taps the strings; the pickup uses electromagnetic induction to create this signal, which being weak is fed into a guitar amplifier before being sent to the speaker, which converts it into audible sound. The electric signal can be electronically altered to change the timbre of the sound; the signal is modified using effects such as reverb, distortion and "overdrive". Invented in 1931, the electric guitar was adopted by jazz guitar players, who wanted to play single-note guitar solos in large big band ensembles. Early proponents of the electric guitar on record include Les Paul, Lonnie Johnson, Sister Rosetta Tharpe, T-Bone Walker, Charlie Christian. During the 1950s and 1960s, the electric guitar became the most important instrument in popular music, it has evolved into an instrument, capable of a multitude of sounds and styles in genres ranging from pop and rock to country music and jazz.
It served as a major component in the development of electric blues and roll, rock music, heavy metal music and many other genres of music. Electric guitar design and construction varies in the shape of the body and the configuration of the neck and pickups. Guitars may have a fixed bridge or a spring-loaded hinged bridge, which lets players "bend" the pitch of notes or chords up or down, or perform vibrato effects; the sound of an electric guitar can be modified by new playing techniques such as string bending and hammering-on, using audio feedback, or slide guitar playing. There are several types of electric guitar, including: the solid-body guitar. In pop and rock music, the electric guitar is used in two roles: as a rhythm guitar, which plays the chord sequences or progressions, riffs, sets the beat. In a small group, such as a power trio, one guitarist switches between both roles. In large rock and metal bands, there is a rhythm guitarist and a lead guitarist. Many experiments at electrically amplifying the vibrations of a string instrument were made dating back to the early part of the 20th century.
Patents from the 1910s show telephone transmitters were adapted and placed inside violins and banjos to amplify the sound. Hobbyists in the 1920s used carbon button microphones attached to the bridge. With numerous people experimenting with electrical instruments in the 1920s and early 1930s, there are many claimants to have been the first to invent an electric guitar. Electric guitars were designed by acoustic guitar makers and instrument manufacturers; the demand for amplified guitars began during the big band era. The first electric guitars used in jazz were hollow archtop acoustic guitar bodies with electromagnetic transducers. Early electric guitar manufacturers include Rickenbacker in 1932; the first electrically amplified stringed instrument to be marketed commercially was designed in 1931 by George Beauchamp, the general manager of the National Guitar Corporation, with Paul Barth, vice president. The maple body prototype for the one-piece cast aluminium "frying pan" was built by Harry Watson, factory superintendent of the National Guitar Corporation.
Commercial production began in late summer of 1932 by the Ro-Pat-In Corporation, in Los Angeles, a partnership of Beauchamp, Adolph Rickenbacker, Paul Barth. In 1934, the company was renamed the Rickenbacker Electro Stringed Instrument Company. In that year Beauchamp applied for a United States patent for an Electrical Stringed Musical Instrument and the patent was issued in 1937. By early-mid 1935, Electro String Instrument Corporation had achieved mainstream success with the A-22 "Frying Pan" steel guitar, set out to capture a new audience through its release of the Electro-Spanish Model B and the Electro-Spanish Ken Roberts, the first full 25" scale electric guitar produced; the Electro-Spanish Ken Roberts was revolutionary for its time, providing players a full 25" scale, with easy access to 17 frets free of the body. Unlike other lap-steel electrified instruments produced during the time, the Electro-Spanish Ken Roberts was designed to play standing vertical, upright with a strap; the Electro-Spanish Ken Roberts was the first instrument to feature a hand-operated vibrato as a standard appointment, a device called the "Vibrola," invented by Doc Kauffman.
It is estimated that fewer than 50 Electro-Spanish Ken Roberts were constructed between 1933 and 1937. The solid-body electric guitar is made without functionally resonating air spaces; the first solid-body Spanish standard guitar was offered by Vivi-Tone no than 1934. This model featured a guitar-shaped body of a single sheet