Original prototype of the artwork "Incidental Music for Yo-Yo Ma" dedicated to the Chinese American cellist Yo-Yo Ma, intimate friend and collaborator of the artist. "Williams’s ten-part Incidental Music for Yo-Yo Ma, 1979, consists of increasingly detailed photocopy enlargements of blank sheet music that eventually turn the paper’s grain into abstract patterns. Ma performed an adaptation of Bach’s Suites for Cello (ca. 1717–23) with Williams’s score at Harvard in 1980 together with the composer Ivan Tcherepnin on synthesizer. For the first time in Berlin—where Williams lived from 1980 until his death in 2007—his score and photo and audio documentation of the performance are presented together." - Fiona McGovern, "Emmett Williams"

Sitography: McGOVERN, Fiona, "Emmett Williams", www.artforum.com, 2016
www.artforum.com/events/emmett-williams-217357/

WIEN, Barbara, "Emmett Williams. Projects with A-Yo and Yo-Yo Ma", www.e-flux.com, 11/02/2016
www.e-flux.com/announcements/185309/emmett-williamsprojects-with-a-yo-and-yo-yo-ma/

WILLIAMS, Emmett, "Emmett Williams. Performances"www.emmett-williams.com
www.emmett-williams.com/biography/performances.html