Five of BCO's greatest performed by dAS, Robo, Daevid Allen, Brook Hinton, Mic Gendreau. Four test tones specially mixed by John Duncan, Monte Cazazza, G. X. Jupitter-Larsen.Tracks 1, 3, 5, 7, 9 comprise the "Greatest Hits" portion:"The greatest hits selections were derived by asking participants to pick from a list of previously issued BCO pop songs. No one played on the pieces they picked."Tracks 2, 4, 6, 8 are the "Test Tones":"While T-Bone takes recording classes at Mills College, das seizes the opportunity to physically manipulate single band sine waves and then asks friends to mix the results, allowing no additives."The remaining tracks are from the BCO sound effects library.