As a Yale undergraduate, he studied composition with several teachers, particularly David Hicks, whose algorithmic music software has been an essential tool in Mr. Pepples' compositions. During his time at Yale, Mr. Pepples was an active member of Martin Bresnick's new music group Sheep's Clothing, a precursor to the Bang On A Can ensemble in New York. Between 2011 and 2015, Mr. Pepples served on the board of the Hong Kong New Music Ensemble and is currently a board member of Musical Observations Inc. His music is included on Open Space CD 35 and in the forthcoming release of Paul Zukofsky's final recording for the CP2 label.