Hamilton's Jonathan Groff will end his reign over Broadway as King George this weekend and on April 7 the three-time Broadway.com Audience Choice Award winner stopped by The Tonight Show to celebrate his run...and perform a very special ceremony. First up, it was revealed that host Jimmy Fallon will be singing the monarch's number "You'll Be Back" on the Hamilton mixtape. Groff then insisted on making him an honorary member of the tuner's Order of the Garter in a ceremony started by the show's first king, Brian d'Arcy James. It has to be seen to be believed. At least incoming king Rory O'Malley now knows what's in store for him before he steps center stage at the Richard Rodgers Theatre on April 11.