Discogs, short for discographies, is a website and crowdsourced database of information about audio recordings, including commercial releases, promotional releases, and bootleg or off-label releases. The Discogs servers, currently hosted under the domain name discogs. com, are owned by Zink Media, Inc. and are located in Portland, Oregon, US. While the site lists releases in all genres and on all formats, it is known as the largest online database of electronic music releases. Discogs currently contains over 8 million releases, by nearly 4 and he was inspired by the success of community-built sites such as Slashdot, eBay, and Open Directory Project, and decided to use this model for a music discography database. The sites original goal was to build the most comprehensive database of music, organized around the artists, labels. In 2003 the Discogs system was rewritten, and in January 2004 it began to support other genres. Since then, it has expanded to include rock and jazz in January 2005 and funk/soul, Latin, in January 2006 blues and non-music were added.
On 30 June 2004, Discogs published a report, which included information about the number of its contributors and this report claimed that Discogs had 15,788 contributors and 260,789 releases. On 20 July 2007 a new system for sellers was introduced on the site called Market Price History. However, at the beginning of 2008, the Market Price History was free of charge for all users. In late 2014, the company released two new beta websites, gearogs lets users add and track music equipment like synths, drum machines, and other electronic music making equipment. At the start of 2015, the company began another beta project — Bibliogs, users can submit information about their books, physical or electronic, different versions and editions, and connect different credits to these books. 21,000 books were submitted by the end of 2016, the project remains in its beta phase. The license has since changed to a public domain one. Prior to the advent of this license and API, Discogs data was only accessible via the Discogs web sites HTML interface and was intended to be viewed only using web browsers, the HTML interface remains the only authorized way to modify Discogs data.
On 7 June 2011 version 2 of the API was released, notable in this release was that a license key was no longer required, the default response was changed from XML to JSON, and the 5000 queries per day limit was removed. On 1 November 2011 a major update to version 2 of the API was released and this new release dropped support for XML, data is always returned in JSON format, however the monthly data dumps of new data are only provided in XML format. Additionally the Premium API service was dropped, on 24 June 2014 Discogs deprecated their XML API in lieu of a JSON-formatted API
Trance is a genre of electronic dance music that developed during the 1990s in Germany. Although trance is a genre of its own, it incorporates influences from other musical styles such as techno, pop, chill-out, classical music, tech house, ambient. A trance refers to a state of hypnotism and heightened consciousness and this is portrayed in trance music by the mixing of layers with distinctly foreshadowed build-up and release. Trance tracks are often lengthy to allow for such progression and commonly have sufficiently sparse opening and closing sections to facilitate mixing by DJs, Trance can be purely instrumental, although vocals are a common feature. Typically they are performed by mezzo-soprano to soprano female soloists, often without verse/chorus structure, structured vocal form in trance music forms the basis of the vocal trance subgenre, which has been described as grand and operatic and ethereal female leads floating amongst the synths. It was promoted by the well-known UK club-night megatripolis whose scene catapulted it to international fame, One writer traces the roots of trance to Paul van Dyks 1993 remix of Humates Love Stimulation.
However, van Dyks trance origins can be traced back to his work with Visions Of Shiva. With film music being influential, Trance was arguably at its commercial peak in the second part of 1990s and early 2000s. Classic trance employs a 4/4 time signature, a tempo of 125 to 150 BPM, a kick drum is usually placed on every downbeat and a regular open hi-hat is often placed on the upbeat or every 1/8th division of the bar. Rapid arpeggios and minor keys are common features of Trance, the latter being almost universal, instruments are added or removed every 4,8,16, or 32 bars. In the section before the breakdown, the motif is often introduced in a sliced up and simplified form. Then later, the climax is usually a culmination of the first part of the track mixed with the main melodic reprise. As is the case with many music tracks, trance tracks are usually built with sparser intros and outros in order to enable DJs to blend them together immediately. As trance is more melodic and harmonic than other dance music.
More recent forms of trance music incorporate other styles and elements of music such as electro. It emphasizes harsher basslines and drum beats which decrease the importance of offbeats, the bpm of more recent styles tends to be on par with house music at 120 -135 beats per minute. However, unlike house music, recent forms of trance stay true to their melodic breakdowns, Trance music is broken into a large number of subgenres. Chronologically, the major subgenres are classic trance, acid trance, progressive trance, uplifting trance, closely related to Uplifting Trance is Euro-trance, which has become a general term for a wide variety of highly commercialized European dance music
MusicBrainz is a project that aims to create an open data music database that is similar to the freedb project. MusicBrainz was founded in response to the placed on the Compact Disc Database. MusicBrainz has expanded its goals to reach beyond a compact disc metadata storehouse to become an open online database for music. MusicBrainz captures information about artists, their works, and the relationships between them. Recorded works entries capture at a minimum the album title, track titles, and these entries are maintained by volunteer editors who follow community written style guidelines. Recorded works can store information about the date and country. As of 26 July 2016, MusicBrainz contained information about roughly 1.1 million artists,1.6 million releases, end-users can use software that communicates with MusicBrainz to add metadata tags to their digital media files, such as MP3, Ogg Vorbis or AAC. As with other contributions, the MusicBrainz community is in charge for maintaining and reviewing the data, besides collecting metadata about music, MusicBrainz allows looking up recordings by their acoustic fingerprint.
A separate application, such as MusicBrainz Picard, must be used for this, in 2000, MusicBrainz started using Relatables patented TRM for acoustic fingerprint matching. This feature attracted many users and allowed the database to grow quickly, however, by 2005 TRM was showing scalability issues as the number of tracks in the database had reached into the millions. This issue was resolved in May 2006 when MusicBrainz partnered with MusicIP, tRMs were phased out and replaced by MusicDNS in November 2008. In October 2009 MusicIP was acquired by AmpliFIND, some time after the acquisition, the MusicDNS service began having intermittent problems. Since the future of the free service was uncertain, a replacement for it was sought. The Chromaprint acoustic fingerprinting algorithm, the basis for AcoustID identification service, was started in February 2010 by a long-time MusicBrainz contributor Lukáš Lalinský, while AcoustID and Chromaprint are not officially MusicBrainz projects, they are closely tied with each other and both are open source.
Chromaprint works by analyzing the first two minutes of a track, detecting the strength in each of 12 pitch classes, storing these 8 times per second, additional post-processing is applied to compress this fingerprint while retaining patterns. The AcoustID search server searches from the database of fingerprints by similarity, since 2003, MusicBrainzs core data are in the public domain, and additional content, including moderation data, is placed under the Creative Commons CC-BY-NC-SA-2.0 license. The relational database management system is PostgreSQL, the server software is covered by the GNU General Public License. The MusicBrainz client software library, libmusicbrainz, is licensed under the GNU Lesser General Public License, in December 2004, the MusicBrainz project was turned over to the MetaBrainz Foundation, a non-profit group, by its creator Robert Kaye
Acid house is a subgenre of house music developed around the mid-1980s by DJs from Chicago. The style was defined primarily by the deep basslines and squelching sounds of the Roland TB-303 electronic synthesizer-sequencer, Acid house spread to the United Kingdom and continental Europe, where it was played by DJs in the acid house and rave scenes. By the late 1980s, acid house had moved into the British mainstream, Acid house brought house music to a worldwide audience. The influence of house can be heard on styles of dance music including trance, breakbeat hardcore, big beat, techno. Other elements, such as strings and stabs, were usually minimal. Some acid house fans used a smiley face with a streak on it. The origin of this usage was the bloodied smiley from Watchmen on the label of Beat Dis by Bomb the Bass, there are conflicting accounts about how the term acid came to be used to describe this style of house music. One account ties it to Phutures Acid Tracks, before the song was given a title for commercial release, it was played by DJ Ron Hardy at a nightclub where psychedelic drugs were reportedly used.
The clubs patrons called the song Ron Hardys Acid Track, the song was released with the title Acid Trax on Larry Shermans label Trax Records in 1987. Regardless, after the release of Phutures song, the acid house came into common parlance. Some accounts say the reference to acid may be a reference to psychedelic drugs in general, such as LSD. According to Rietveld, it was the house sensibility of Chicago, in a club like Hardys The Music Box, that afforded it its initial meaning. In her view acid connotes the fragmentation of experience and dislocation of meaning due to the effects on thought patterns which the psycho-active drug LSD or Acid can bring about. In the context of the creation of Acid Tracks it indicated a concept rather than the use of drugs in itself. One theory, holding that acid was a reference towards the use of samples in acid house music, was repeated in the press. In this theory, the term came from the slang term acid burning. In 1991, UK Libertarian advocate Paul Staines claimed that he had coined this theory to discourage the government from adopting anti-rave party legislation.
Several accounts claim that Genesis P-Orridge coined the term on the 1988 Psychic TV release “Tune In. ”By other accounts, while shopping in Chicago in 1986, P-Orridge came across a bin of records marked acid, indicating a corrosive liquid, and mistook it for a reference to LSD