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An album is a collection of audio recordings issued on a medium such as compact disc (CD), vinyl (record), audio tape, or digital. Albums of recorded sound were developed in the early 20th century as individual 78 rpm records collected in a bound book resembling a photo album; this format evolved after 1948 into single vinyl long-playing (LP) records played at 33+1⁄3 rpm.
Albums c. 2000 came on compact discs stored in jewel cases.
Early record albums from the first half of the 20th century resembled photo albums, being packaged in book form on multiple 78 rpm discs.
A vinyl LP on a turntable
A typical 8-track tape player
Phonograph record
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A phonograph record, a vinyl record, or simply a record or vinyl is an analog sound storage medium in the form of a flat disc with an inscribed, modulated spiral groove. The groove usually starts near the outside edge and ends near the center of the disc. The stored sound information is made audible by playing the record on a phonograph.
Three vinyl records of different formats, from left to right: a 12 inch LP, a 10 inch LP, a 7 inch single
Conductor and cast members of the D'Oyly Carte Opera Company with acoustic recording horn at HMV, c. 1924
Emile Berliner with disc record gramophone
Hungarian Pathé record, 90 to 100 rpm