Flexi Disc

The flexi disc (also known as a phonosheet or Soundsheet, a trademark) is a phonograph record made of a thin, flexible vinyl sheet with a molded-in spiral stylus groove, and is designed to be playable on a normal phonograph turntable. Flexible records were commercially introduced as the Eva-tone Soundsheet in 1962, but were previously available in the Soviet Union as "roentgenizdat", "bones" or "ribs", underground samizdat recordings on x-ray film.

Read more about Flexi Disc:  History, Human League Track

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