Master classes worldwide include the annual College Audition Preparation. Recitals on alto, tenor, and bass trombones, euphonium, and bass trumpet. Director of the Lewis Van Haney Philharmonic Prize. Appearances with the New York Philharmonic, Chicago, San Francisco and Saint Louis Symphonies, Minnesota Orchestra and Summit Brass. Recordings include Stewart Sounds, Trombones Under the Tree with Joe Alessi, Mark Lawrence, Carl Lenthe and Grammy award winning recordings with the Philadelphia Brass Ensemble.
Students hold major positions as performers and pedagogues.
Articles include ITA, TUBA, and Online Trombone Journal. Inventor of the Stewart Stand for euphonium and tuba. Organizer of the Second International Brass Conference. Awards include Educational Press Association of America Distinguished Achievement Award of 1991, Indiana University School of Music Teaching Excellence Recognition Award 1998, and The Neill Humfeld Award for Teaching Excellence given by the International Trombone Association in 1998. Albert Zuijderduin, Visiting Professor of Music.