Born into a musical family, Greg Mulligan began studying violin at age eight. Mulligan received his bachelor of music degree from the Eastman School of Music and master of music degree from Indiana University, where he studied with Josef Gingold.
Mulligan returned to the Baltimore Symphony Orchestra at the beginning of the 1994-95 season after having served as concertmaster of the San Antonio Symphony from 1989 through 1994. From 1990 to 1991, he was concertmaster of the Colorado Music Festival. Before moving to San Antonio, Mulligan had been a member of the Baltimore Symphony Orchestra’s first violin section for nine years. Other orchestras to his credit include the St. Louis Symphony, the Detroit Symphony Orchestra, the Grand Teton Music Festival, and the Buffalo Philharmonic.
Since 1995, audiences have enjoyed listening to performances of Mulligan with the Atlantic String Quartet, of which he is a founding member. Mulligan also performs regularly with Pro Musica Rara, the Baltimore early music ensemble.