Donald St.Pierre has been on the faculty of the Curtis Institute of Music since 1990. He is composer-in-residence and rehearsal accompanist for the Mendelssohn Club chorus of Philadelphia. He is an adjunct faculty member of Temple University. During the summers, he is head coach of the voice department of the School of Music at the Chautauqua Institution. Prior to 1990, he was music director of the Skylight Opera Theatre, keyboard player for the Milwaukee Symphony Orchestra, and company pianist for the Milwaukee Ballet.