Note to Editors: Members of the media are invited to all symposium events and should check in at the event registration desk, 9 a.m. to 5 p.m. Oct. 7 in the Imig Music Building lobby. Photographers should contact Professor Tom Riis in advance. Photography during concerts is not permitted. Nadia Boulanger, the master musician and teacher of luminaries like Aaron Copland, Philip Glass, Elliott Carter and Quincy Jones, said the biggest question ever asked of her came from a young boy in Boston. He wanted to know what constituted a masterpiece.