Laurie Minor-Penland's "The Eniac" (Used with permission)
© Thinking Machines Corporation, 1989. Photo: Steve Grohe. (Used under the discretion of Tim O'Reilly)
Computer History Museum
Combination of Creative Commons Share-Alike photo of bass clarinet by Frédéric Boulanger (Own work)
[GFDL ( or CC BY-SA 3.0 (], via Wikimedia Commons, and Public Domain sheet music.

Background - Steve Sundstrom's Abstractile (heavily modified in GIMP)