Alvin Lucier "I Am Sitting in a Room" 1969
Mark Callahan
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I am sitting in a room (1969) is one of composer Alvin Lucier's best known works, featuring Lucier recording himself narrating a text, and then playing the recording back into the room, re-recording it. The new recording is then played back and re-recorded, and this process is repeated.

http://ubumexico.centro.org.mx/sound/source/Lucier-Alvin_Sitting.mp3

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