David Rosenboom's legendary Brainwave Music, originally released on A.R.C. Records in 1975. This is an expanded double-LP edition with over 40 minutes of additional contemporaneous material. Pioneer of live electronics, innovator in music education, collaborator with artists as diverse as Jon Hassell, Jacqueline Humbert, Terry Riley, and Anthony Braxton, Rosenboom is renowned for his ground-breaking experiments with the use of brain biofeedback to control live electronic systems. Each of the three pieces that make up the original Brainwave Music LP integrates biofeedback with musical technology in different ways. In the side-long "Portable Gold and Philosophers' Stones", four performers have electrodes and monitoring devices attached to their bodies to receive information about brainwaves, temperature, and galvanic skin response. This information is analyzed and fed into a complex set of frequency dividers and filters, manned by Rosenboom, but essentially played by each of the performers through their psychophysiological responses.