By June 1967 the group had changed their name to Zoot. They moved to Melbourne by mid-1968, where they recorded their debut single, "You'd Better Get Goin' Now". At this time Birtles adopted his professional name: Cotton had shortened his nickname to "Beeb", and Birtles Anglicised the first two syllables of Bertelkamp. Birtles and Cotton co-wrote "Little Roland Lost", which was issued as the B-side of Zoot's June 1969 single, "Monty & Me". As a member of Zoot, Birtles appeared on all their recorded material including both of their studio albums, "Just Zoot" (1970) and "Zoot Out" (1971), but they broke up in May 1971.