Their debut, a collection of psychedelic rock songs, appeared on the small independent 'Head' record label in the UK, and on Chess in the United States. Over the course of 1970 several members of the band became Muslims (adherents of the Sufi order), and their second album reflected the spiritual journey they had embarked on, sounding little like its predecessor. They were the closing act on the first day of the Isle of Wight Festival 1970. It has been said that it was a meeting between Richard Thompson and the band that introduced Richard and Linda Thompson to the Sufi order. It has notable guitar parts from Martin Stone.