Monday, April 15 at 7:00 p.m., Emerson Auditorium in Taylor Music Center — The London-based Marsyas Trio with Helen Vidovich, flute, Olga Stezhko, piano, and Val Welbanks, cello, will include the U.S. premiere of our own Professor Hilary Tann’s composition In the Theater of Air — Free and open to the public.