This is a drawing of sheet music titled "Clapping Music for Two Performers." The image displays a sequence of musical notations for two individuals to perform by clapping. Instructions at the bottom explain how the performance should commence in unison at bar one. It details the structure and pattern of measures, with one performer keeping a steady rhythm while the other shifts the pattern. The performers choose the clapping sound, aiming to blend their parts for a unified aural experience. The piece is credited to Steve Reich, dated December 1972 and reproduced in 1978.