At the time the LP was introduced, nearly all phonograph records for home use were made of an abrasive (and therefore noisy) shellac compound, employed a much larger groove, and played at approximately 78 revolutions per … See more

With the advent of sound film or "talkies", the need for greater storage space made 33+1⁄3 rpm records more appealing. Soundtracks – … See more

The following are some significant advances in the format:
• Helium-cooled cutting heads that could withstand higher … See more

Despite some earlier experiments and attempts at commercial marketing, the Long Play format did not begin to enjoy commercial … See more

Reel-to-reel magnetic tape recorders posed a new challenge to the LP in the 1950s, but the higher cost of pre-recorded tapes was one of several factors that confined tape to a niche market. Cartridge and cassette tapes were more convenient and less expensive … See more

The close spacing of the spiral groove that allowed more playing time on a 33+1⁄3 rpm microgroove LP also allowed a faint pre-echo of upcoming loud sounds. The cutting stylus … See more

• Record production portal
• Album cover
• Conservation and restoration of vinyl discs
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