Singing Mask Ceremonies by the composer feature his unique masks which incorporate flutes, reeds, ratchets and other sounding and listening devices. His most recent work, River Sounding, stems from a project made in collaboration with the Delaware Riverkeeper Cynthia Poten, composer Pauline Oliveros, performance artist John Bromberg and visual artist Alan Gussow features gatherings of people along the 350 mile length of the Delaware River to listen to the river in silence and create work in response to that listening.