While attending the University of Pennsylvania in Philadelphia, where he earned a Bachelor of Science degree in biology, Hyman met future bandmate and composing partner Eric Bazilian and producer Rick Chertoff. In the late 1960s, Hyman and Chertoff, along with local singer David Kagan formed a band called Wax, who recorded an album in the early 1970s. Hyman and Kagan later formed a new band with Bazilian called Baby Grand in the late 1970s, with Chertoff acting as producer. Baby Grand released two albums on Arista Records, one eponymous and the other called "Ancient Medicine". While the band had some critical success, it never achieved any commercial success and eventually disbanded.