LP 的詞源

1948年， long-playing 唱片的縮寫。

The most revolutionary development to hit the recording industry since the invention of the automatic changer is the Long Playing record, which can hold an entire 45-minute symphony or musical-comedy score on a single 12-inch disk. ... The disks, released a few weeks ago by Columbia Records and made of Vinylite, have phenomenally narrow grooves (.003 of an inch). They are played at less than half the speed of the standard old-style records. [Life magazine, July 26, 1948]

自動唱片機發明以來，最具革命性的發展是長播唱片，它可以在單個12英寸的唱片上容納整個45分鐘的交響樂或音樂喜劇配樂。...這些唱片是哥倫比亞唱片公司幾周前發佈的，由 Vinylite 製成，具有極窄的凹槽（.003英寸）。它們的播放速度不到標準老式唱片的一半。[《生活》雜誌，1948年7月26日]