Saturday Night Live just closed out its historic 50th season, marking five decades' worth of the finest sketch comedy and live music performances in America. The show has put countless stars on the radar, including Dan Aykroyd, Tracy Morgan, Gilda Radner, Kate McKinnon, Will Ferrell, Pete Davidson, Amy Poehler, and Tina Fey, but the list goes on and on. Beyond the cast members, an elite group of actors, comedians, and other stars have formed the "five-timers club," for those who have hosted the show five or more times. And beyond that comes the final piece of the 90-minute puzzle: the musical guest.