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