Reggae singles dating

The biggest digital music distributor, i Tunes, accepts as many as three tracks less than ten minutes each as a single, as does popular music player Spotify.in the late 19th century, when the gramophone record began to supersede phonograph cylinders in commercially produced musical recordings.The 7-inch 45 rpm record was released 31 March 1949 by RCA Victor as a smaller, more durable and higher-fidelity replacement for the 78 rpm shellac discs.

Although CBS tried to make the record more "radio friendly" by cutting the performance into halves, and separating them between the two sides of the vinyl disc, both Dylan and his fans demanded that the full six-minute take be placed on one side, and that radio stations play the song in its entirety.

Singles have been issued in various formats, including 7-inch (18 cm), 10-inch (25 cm), and 12-inch (30 cm) vinyl discs (usually playing at 45 rpm); 10-inch (25-cm) shellac discs (playing at 78 rpm); cassette, 8 and 12 cm (3- and 5-inch) CD singles and 7-inch (18 cm) plastic flexi 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 inches (18 cm).

There was plenty of information 'leaked' to the public about the new 45 rpm system through front page articles in Billboard magazine on Dec. 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.

As stereo recordings became popular in the 1960s, almost all 45 rpm records were produced in stereo by the early 1970s.

Columbia, which had released the 33 ⅓ rpm 12-inch vinyl LP in June 1948, also released 33 ⅓ rpm 7-inch vinyl singles in March 1949, but they were soon eclipsed by the RCA Victor 45. The first release of the 45 came March 29, 1949 in seven translucent colors, one for each type of music: dark blue 52-xxxx light classics series, light blue 51-xxxx international series, yellow 47-xxxx juvenile series, bright red (cerise) 50-xxxx folk series, deep red 49-xxxx classical series, green (teal) 48-xxxx country series, and black 47-xxxx popular series.

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.

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