Conversation so far:
What was the music referring to in Late Night with Jimmy Fallon?
Music was a signature part of the humor of Late Night with Jimmy Fallon. Fallon employed impressions of celebrities and song parodies that rest in borderline-surreal pop cultural juxtapositions“.
What musical performances did Late Night with Jimmy Fallon have?
The first among these was Brian Williams' appearance for Slow Jam the News, a bit where Fallon and The Roots turned news stories into a sexy R&B song.“

Question: Did the show have other performers?
Self-contained rewrite: Did Late Night with Jimmy Fallon have other performers besides Brian Williams?