Watch Shawn Mendes Inject Some Whimsy Into 'Treat You Better' With Jimmy Fallon
Raspy voice, meet classroom instruments
BTS Sing And Dance Their Way Into Jimmy Fallon's Heart (But He Only Has Eyes For Jimin)
Chimmy Fallon gets an education in Bangtan, from finger hearts to fanchants, on 'The Tonight Show'
Justin Bieber Dons A Fake Mustache To Dance With Strangers In Central Park
With some help from Jimmy Fallon, naturally