Guest Stars John Legend as Himself Lady Gaga as Herself Ben Platt as Himself Sam Smith as Themselves Miley Cyrus as Herself Nick Jonas as Himself Anna Kendrick as Herself Cardi B as Herself Bruno Mars as Himself U2 as Themselves Kendrick Lamar as Himself Little Big Town as Themselves Shemar Moore as Himself Hailee Steinfeld as Herself Donald Glover as Childish Gambino Sarah Silverman as Herself Donnie Wahlberg as Himself Kelly Clarkson as Herself Pink as Herself Dave Chappelle as Himself Patti LuPone as Herself Kesha as Herself Katie Holmes as Herself Trevor Noah as Himself Alicia Keys as Herself Jim Gaffigan as Himself Tony Bennett as Himself Elton John as Himself Luis Fonsi as Himself Alessia Cara as Herself Khalid as Himself Logic as Himself Daddy Yankee as Himself Victor Cruz as Himself