John Beck joined Jim Pons and Robert Lee Reiner's band The Rockwells in late 1964. They auditioned to replace The Byrds at Ciro's on Sunset Strip. Having got the job they changed their name to The Leaves. They were signed to Mira Records in 1965 and, eventually after re-recording it twice, had a hit with their second release "Hey Joe" in 1966 - subsequently parodied by FZ as Flower Punk.
He is included in the list of names on the Freak Out! cover.