Since the mid 1990s the music of composer Julia Werntz has been almost exclusively microtonal. Through her music, her published writings, her teaching, and her activities as artistic director of the Boston Microtonal Society, she has been an important voice in the field of microtonal music. Her compositions have been performed at concert series and festivals around the Northeastern United States and Europe, such as the Tage für Neue Musik at the Darmstadt Akademie für Tonkunst, the Stockholm New Music Festival, the Week of Contemporary Music, Bucharest, the Here/Now Festival in Sofia, Bulgaria, the UK Microfest, the BKA Theater in Berlin, New York's Vision Festival, June in Buffalo, Enchanted Circle, Extension Works, and the Auros Group for New Music, Firebird Ensemble, Prana Duo, DuoKaya, Loadbang and NotaRiotous series. She has twice been a fellow at the Virginia Center for the Creative Arts.
Werntz has published articles on microtonal and other contemporary music in Perspectives of New Music, The Sonneck Society Bulletin, ParisTransatlantic, NewMusicBox, and New World Records. She is co-founder of NotaRiotous, the chamber ensemble of the Boston Microtonal Society.