program at the Graduate Center of the City University of New York for a period of two years, Brittelle dropped out and re-enrolled privately with his primary teacher, Pulitzer Prize-winning composer David Del Tredici.
In addition to Del Tredici, Brittelle's musical mentors have included Mike Longo (longtime pianist/arranger for Dizzy Gillespie), and punk guitarist Richard Lloyd of Television, with whom he briefly toured.
During this time, Brittelle played in a number of post-punk and experimental bands and worked as booker for Sin-e, a heralded New York City music venue on the Lower East Side of Manhattan.
Brittelle has stated that his first album "Mohair Time Warp" written in the wake of his vocal injury, is the first example of work that represented the full breadth of his musical vision.
Classical TV has stated: "William Brittelle is creating a body of work that has no precedent, and marks him as one of the most promising heirs of the vital American maverick tradition.
Projects he arranged and/or music directed include Triptych: Eyes of One Another by Bryce Dessner, Mary (An Opera) by Kanye West, Replica (Live) by Oneohtrix Point Never, Prince (A Reimagining) featuring Justin Vernon, Ariel Engel, Jon Hopkins, and others, and Song of the Earth for Dirty Projectors and the Los Angeles Philharmonic (re-orchestration).
Brittelle briefly served on the faculty of The New School in New York City, establishing the world's first Genre-fluid Minor in music degree, and is currently a member of the Artistic Innovators Collective at Brown University.