Andy Clark (vocals, keyboards, percussion, flute, saxophone, rhythm guitar) and Mick Hutchinson (lead guitar, percussion, piano, bass) first worked together in Vamp, a short-lived UK-based quartet founded by ex-Pretty Things drummer Viv Prince in the late 60s. The group split up after completing one single, but Clark and Hutchinson remained together to record the remarkable A=MH2. This improvisatory set proved immensely popular, particularly for the latter’s impressive guitar work. A former member of Sam Gopal’s Dream, Hutchinson brought that group’s neo-Eastern influence to his new venture, highlighted superbly by the 13-minute track, ‘Improvisation On An Indian Scale’. The album’s success inspired a full-time line-up which was completed by Stephen Amazing (bass) and Del Coverly (drums). Subsequent releases lacked the innovation of the group’s debut release and Clark-Hutchinson split up following a third set, Gestalt.