After his college graduation in 1961, Waronker was employed by Liberty full-time, working in the label's promotion department. A year later, he transferred to Liberty's publishing arm, Metric Music, where he worked for Mike Gould and, briefly, as an assistant to Tommy LiPuma. At Metric, Waronker produced song demos; out of a fear that the producers would "mess up the song or the arrangement", Waronker learned how to make the demos sound like fully produced records with limited funds, and how to take advantage of "moments within a song".