Nearly 25 years ago over the course of three days, in April 1973, reportedly some 60 musicians on “no less than ten synthesizers” and various other instruments filled six acres of the San Bernardino National Forest in California with music. Other Minds guru Charles Amirkhanian was there at the time, interviewing the involved composers and recording snatches of the music, heard in this archival document echoing and overlapping amid the trees (MP3). There are jazz performances, radio improvisations and much philosophizing about the nature of music — and about music amid nature. Participants included Richard Bunger, Barry Gott, Jacques Bekaert, Nicolas Slonimsky and Dane Rudhyar . More info at archive.org and otherminds.org.