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A brief history of the 45

Singles have been issued in various formats, including 7-inch, 10-inch and 12-inch vinyl discs. The most common form of the vinyl single is the 45 or 7-inch, the names are derived from its play speed, 45 rpm and the standard diameter 7-inch.

The 7-inch 45 rpm record was introduced in 1949 by RCA as a smaller, more durable and higher-fidelity replacement for the 78 rpm shellac discs. The first 45 rpm records were monaural, with recordings on both sides of the disc. As stereo recordings became popular in the 1960s, almost all 45 rpm records were produced in stereo by the early 1970s.

The most common form of the vinyl single is the 45.

Although 7 inches remained the standard size for vinyl singles, 12-inch singles were introduced for use by DJs in discos in the 1970s. The longer playing time of these singles allowed the inclusion of extended dance mixes of tracks. In addition, the larger surface area of the 12-inch discs allowed for wider grooves (larger amplitude) and greater separation between grooves, the latter of which results in less cross-talk. Consequently, they “wore” better, and were less susceptible to scratches. The 12-inch single is still considered a standard format for dance music, though its popularity has declined in recent years.

Depending on its type, in addition to the song itself, a single may include remixes of the song, additional songs, a music video for promoting the single, and a collectible poster.

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Analog vinyl sampling

In music, sampling is the act of taking a portion, or sample, of one sound recording and reusing it as an instrument or a sound recording in a different song or piece. Sampling was originally developed by experimental musicians working with musique concrète and electroacoustic music, who physically manipulated tape loops or vinyl records on a phonograph.

In the late 1960s, the use of tape loop sampling influenced the development of minimalist music and the production of psychedelic rock and jazz fusion. In the 1970s, DJs who experimented with manipulating vinyl on two turntables gave birth to hip hop music, the first popular music genre based originally around the art of sampling.

The widespread use of sampling in popular music increased with the rise of electronic music and disco in the mid 1970s to early 1980s, the development of electronic dance music and industrial music in the 1980s, and the worldwide influence of hip hop since the 1980s on genres ranging from contemporary R&B to indie rock.

Since that time sampling is often done with a sampler, originally a piece of hardware, but today, more commonly a computer program. Vinyl emulation software may also be used, however, and many turntablists continue to sample using traditional methods. The inclusion of sampling tools in modern digital production methods increasingly introduced sampling into many genres of popular music, as well as genres predating the invention of sampling, such as classical music, jazz and various forms of traditional music.

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