David Rosenboom (b. 1947) has been widely acclaimed as a pioneer in American experimental music since the 1960's. He is a composer, performer, conductor, interdisciplinary artist, author, and educator having explored ideas in his work about the spontaneous evolution of forms, languages for improvisation, new techniques for ensembles, cross-cultural collaborations, performance art, computer music systems, interactive multi-media, compositional algorithms, and the structure of the brain and nervous system. These two works, "Portable Gold and Philosophers Stones" (1972) and "On Being Invisible" (1976-77), are classics of live electronic music involving extended musical interface with the human nervous system.