This is a photograph of a handwritten score. The image features the title "PENDULUM MUSIC" prominently at the top, followed by a subtitle indicating this piece is intended "FOR MICROPHONES, AMPLIFIERS SPEAKERS AND PERFORMERS." Below, there is a detailed description of the piece's performance instructions, explaining how microphones should be set up to swing like pendulums, how amplifiers should be tuned to create feedback, and how performers should release and allow the microphones to swing. The text instructs that the performance involves allowing these pendulums to naturally come to rest, concluding when a performer turns off the amplifiers. The piece is signed at the bottom by "Steve Reich," with a notation of dates suggesting the original and subsequent revisions.