This classic film produced and directed by Roger Corman was written by Jack Nicholson and starred Peter Fonda Dennis Hopper and others. The American band the Electric Flag composed and performed the musical score to this soundtrack. The band featured a lineup consisting of such great talents as Mike Bloomfield Buddy Miles Harvey Brooks Barry Goldberg and Nick Gravenites. Featuring works that were considered controversial at the time tracks on the soundtrack include Peter s Trip Psyche Soap M-23 Hobbit and more.