Duncan Hazlett McGuire was an Australian musician, songwriter, recording engineer and producer. He was associated with vocalist, Doug Parkinson, in various groups during the 1960s and 1970s; McGuire was also a founding member of the jazz fusion band, Ayers Rock from 1973 until he left in 1976. As a bass guitarist he appeared in several of Parkinson's groups including The Questions (1965–68), Doug Parkinson In Focus (1968–1969) and The Southern Star Band (1978–81). In October 1980 he co-produced and engineered the debut self-titled album by Australian rock band, INXS. He died of a brain tumour in July 1989.