The play begins with the day of the annual auditions at Grand Central Station for the MTA's Musicians Under New York program, where over 300 applicants are whittled down to the final talented and lucky few. The play alternates between two time frames: a waiting room in the present and the day of the live performances. While in the waiting room, we learn about each and every one of the buskers — their dreams, motivations, and reasons for becoming a New York City busker despite the pessimism of veterans who continually discourage them. The struggle between the hardened veterans and hopeful newcomers leads to a mutual respect between two generations and finally an Underground Cabaret, in which the audience chooses the best musical collaborations between subway musicians. Together they mourn the lost heyday of busking but keep faith in a brave new future.