His dramatic and energetic style reflects his interest in expression and gesture. Sebastian’s music extends from orchestral to chamber works, to electronic and computer-generated works. Broadcasts and performances include participation in North River Music Series, PASNY Festival, and The Box: Living Composers Concert Series; university performances at Juilliard School, Massachusetts Institute of Technology, Manhattan School of Music, Oberlin Conservatory, and Cal Arts. Commissioning ensembles include Yarn/Wire, TimeTable Percussion Trio, Linda Wetherill, Zella Trio, Ensemble Pamplemousse, The Miolina Violin Duo, and Iktus Percussion Quartet.