Peter Dominguez grew up in Milwaukee, Wisconsin participating in the Music for Youth Orchestras, and performing with his father, pianist and singer Frank DeMiles. His teachers included Willard Feldman and Clyde Russell, Peter went on to study with Roger Ruggeri and Richard Davis at the University of Wisconsin, Madison, where he earned his baccalaureate and masters degrees with a teaching assistantship 1980-82.
In 1981 he was the first recipient of the Milton J. Hinton scholarship competition award. A teaching assistantship and doctoral studies with Dr. Lucas Drew at the University of Miami, Coral Gables followed in 1982-84. Eventually securing positions in both the Florida Philharmonic and Michigan State University, Peter chose MSU, served as Professor of Double Bass and Jazz Studies 1984-96, and was instrumental in developing their Jazz Studies program. During his Michigan years, he continued studies with Robert Gladstone and performed with the Detroit Symphony.