 "Brother" Jack McDuff switched from piano to Hammond in 1959, and toured regularly throughout the 1960s and 1970s.In his Hammond playing, Keith Emerson sought partly to replicate the sound achieved by McDuff in his arrangement of "Rock Candy".An admirer of Billy Preston's work also, particularly the 1965 instrumental "Billy's Bag", Emerson limited the use of Leslie because he felt that was Preston's domain at the time, whereas he himself was approaching the instrument with an aesthetic combining "a white European attitude", classical music, and rock.