Spirit was an American jazz/hard rock/psychedelic band founded in 1967, based in Los Angeles, California.
The original lineup of the group was Randy California (guitars, vocals), Jay Ferguson (vocals, percussion), Mark Andes (bass), California's stepfather Ed Cassidy on drums, and keyboard player John Locke. The new band was originally named the Spirits Rebellious (after a book by Khalil Gibran) but was soon shortened simply to Spirit. All but Locke had been part of the band The Red Roosters in 1965. California (then still known by his birth name of Randy Wolfe) had also played with Jimi Hendrix (then known as Jimmy James) in Jimmy James and the Blue Flames for three months in 1966.