The Harvard Din & Tonics are Harvard University’s signature all-male a cappella singing group, known around the world for their rich tradition of musical and performance excellence. With a repertoire centered on the American jazz standards of the 1920s, 1930s, and 1940s, these Harvard gentlemen — who perform in white tie, tails, and lime green socks — have an enviable reputation for their impeccable musicality, snappy choreography, and hilarious antics.