A well-known American contributor in the symphony field to both the classical and education/family repertoire, Peck has had thousands of performances by hundreds of orchestras in the United States, Canada, Europe, Asia, Latin America and Africa, including more than a dozen major orchestras such as the London Symphony, Montreal Symphony, and the Boston Symphony Orchestra, as well as regional orchestras throughout the U.S.

His best known pieces include Harmonic Rhythm timpani concerto, The Glory and the Grandeur percussion concerto, The Thrill of the Orchestra narrated demonstration piece, and Signs of Life for strings. Peck's music is notable for colorful and idiomatic orchestration and an exceptionally accessible personal style combining the classical idiom with a recognizable influence of popular American musical language.