In 1969, guitarist Barry Goudreau introduced Delp to Tom Scholz, who was looking for a singer to complete some demo recordings. Eventually, Scholz formed the short-lived band Mother's Milk (1973–74), including Delp and Goudreau. After producing a demo, Epic Records eventually signed the act. Mother's Milk was renamed Boston, and the self-titled debut album (recorded in 1975, although many tracks had been written years before) was released in August 1976. Delp performed all of the lead and all backing harmony vocals, including all layered vocal overdubs.