Abstract: The seats in a seating venue, e.g. a large sports stadium, are designated into a plurality of distinct sound triggers. Sensors detect predetermined movement of participants at the sound triggers and generate signals which are sent to a broadcast device which broadcasts different, predetermined sounds in response to signals received from different sound triggers. Groups of people at a large seating venue can move together to generate a single sound, e.g. a musical instrument sound. By coordinating the sequential movement of different sound triggers, musical compositions are broadcast.