William (Bill) Cutter joined the Conservatory in 1999 as director of choral studies, a position he held until 2010. He is now a professor of core studies in theory and teaches theory and ear training courses. In 2001, Cutter founded Boston Conservatory's Vocal/Choral Intensive, a summer program for high-school singers, and he continues to serve as an artistic codirector, along with Patty Thom.
In addition to his work at the Conservatory, Cutter is director of choral programs at MIT, a position he assumed in 1997. He has also served on the faculties of the University of Lowell (1987–1988), Walnut Hill School (1988-1993), and Boston University's School for the Arts (1992-1997), where he was an assistant professor of music. From 2002 to 2007, Cutter was the chorus master of the Boston Lyric Opera company. Since 1993, he has been the assistant conductor of the Tanglewood Festival Chorus, the official chorus of the Boston Symphony Orchestra. In this position, he has prepared the chorus for Maestros Bramwell Tovey, David Zinman, Andris Nelsons, Roger Norrington, Keith Lockhart, and John Williams. Cutter has also served as guest conductor of the Montreal Symphony Chorus, Boston Choral Ensemble, New England Conservatory Chamber Choir, and Massachusetts Intercollegiate Choral Festival, in addition to several high-school choral festivals around the United States.
With degrees in composition, Cutter maintains an active career as a composer and arranger, with recent performances of his work by the Boston Pops, the MIT Concert Choir and Symphony, the Chatham Chorale, and the Illinois State University Orchestra. His music has been published by Alfred Educational Publishers, Walton Music Publishers, Roger Dean Publishing, Colla Voce Music, E. C. Schirmer, and Hinshaw Music.