Leonard is a composer, saxophonist and interdisciplinary artist. His work ranges from solo concerts for saxophone/live electronics, to works for orchestra, audio/video installation and sound for dance, theater and performance.
His compositions/performances were featured by Carnegie Hall, Boston Globe Jazz Festival, Musicacustica (Beijing), International Computer Music Convention (Montreal), Tel Aviv Biennial for New Music, Moscow Autumn, Auditorium Parco della Music (Rome), Museo Riena Sofia (Madrid), Panama Jazz Festival, Jazz Plaza International Festival (Havana). Leonard’s ensemble featured Marshall Allen (Director of Sun Ra Orchestra), Bruce Barth, Joanne Brackeen, Don Byron, Uri Caine, Kenwood Dennard, Robin Eubanks, Oriente Lopez, Rudresh Mahanthappa, Badal Roy, Jamaaladeen Tacuma.
Leonard composed the music for Relatives, by Tony Oursler and Constance DeJong that was featured by the Whitney Biennial and the ICA, Boston. Leonard's work with visual artist Maria Magdalena Campos-Pons spans twenty-five years. Their collaborative performance, film, video and installations were featured by the Havana Bienal, 49th and 55th Venice Biennale, Museum of Modern Art (NYC), purchased by the National Gallery of Canada and presented by Dakar Biennial.
Leonard is the Artistic Director of Berklee College of Music's Interdisciplinary Arts Institute. He is currently on the Fulbright Specialist Roster and is a Research Affiliate at M.I.T. program in Art, Culture and Technology.