 The 5th Dimension's producer, Bones Howe, used Bob Alcivar as the singers' vocal arranger, as well as instrumental backing by the Wrecking Crew for their recording sessions.In the early 1960s, Lamonte McLemore and Marilyn McCoo got together with three friends from Los Angeles—Harry Elston, Lawrence Summers.and Fritz Baskett—to form a group called 'the Hi-Fis' (which later became 'the Vocals').