He has recorded and toured internationally with his own ensembles, and with Music for Homemade Instruments, Gamelan Son of Lion and numerous other groups and artists (see full bio on homepage link above). Simons has composed scores for dance, film, theater, installations, and concert ensembles. He received a 2003 Rockefeller Foundation residency at Bellagio, Italy to compose music for Newband and its Harry Partch instruments. His 2004 CD "Prismatic Hearing" is available on the Tzadik label.