Peter Wahrhaftig is the principal tubaist of the San Francisco Ballet Orchestra as well as with the Sun Valley Summer Symphony and the San Francisco Contemporary Music Players. He has performed with the San Francisco Symphony and the San Francisco Opera, the Israel Philharmonic, Chicago Symphony, St. Louis Symphony, and the Oakland-East Bay Symphony. Additionally, he is an active recording musician, having appeared in numerous movie and video game soundtracks. He is active as a teacher, a chamber musician, and has been seen using a cimbasso.

On playing in the Bay Brass: Helping to create the sound of a full brass section of like-minded musicians playing wonderful music together, is akin to musical nirvana. The Bay Brass is a musical home where, through mutual enthusiasm, we are lucky enough to sometimes reach such a state. The singing, musical qualities of brass, combined with their capacity for power and resonance create a state of excitement and expression unique amongst musical genres.

Peter enjoys spending time with his wife, Rena, and his two young daughters. He is trying to get them to cease calling him "oom papa" but has so far been unsuccessful.