Susan Vollmer is principal horn of the Santa Cruz County Symphony and a member in the Napa Valley Symphony and the Sacramento Philharmonic. Since 1998 she has been principal horn in the San Francisco Opera Center, and an active freelance performer with such groups as The San Francisco Opera and the San Francisco Ballet. She has performed internationally with the Belgian National Symphony, the Israel Symphony, Mexico City Philharmonic, and Bolshoi Ballet, among others. Locally she has worked on commercial recordings at the Skywalker Ranch and Fantasy Studios. Besides teaching at UC Santa Cruz, she has studios in Palo Alto and San Francisco, and is an Artist-in-residence at the San Francisco School of the Arts.