Guitarist Albert Lee had been working with Lawrence as a session player, and the original idea had been to record with former Screaming Lord Sutch bassist Tony Dangerfield.

[1] The backing tracks were recorded in two overnight sessions on 20 April and 23 May 1970 at De Lane Lea Studios, London, starting at 11 pm.

[3] Deep Purple and former Sutch guitarist Ritchie Blackmore had previously worked with Lawrence and brought along their drummer Ian Paice.

[1] Session guitarist Big Jim Sullivan was invited as he had originally taught Blackmore how to play guitar and was greatly admired by him.

[3] The guitar workout instrumental "Bullfrog" is a Deep Purple song "Jam Stew", which had been previously recorded at a BBC Radio 1 session.

It was issued in the UK by MCA Records in March 1972 after Lawrence played some tracks to company president Mike Maitland.

The front cover had a quote from Blackmore taken from an interview with Guitar Player magazine in September 1978, which correctly identified himself, Paice, Lee and Sullivan on the album but mistakenly credited Glover.

[2] It was remixed at Abbey Road Studios, London in 1991 by Lawrence and engineer Peter Vince and reissued on LP and CD.

The re-release contained extra tracks not on the original release, and additional information and sleeve notes including an interview with Lawrence.

[11] Dave Thompson gave a retrospective review on AllMusic which was mixed, praising the quality of musicians, but felt there was "little [...] to truly engage the attention".