Conversation so far:
who wrote it's a jungle out there
It's a Jungle Out There is a song written by Randy Newman and used as the theme song for the TV series Monk starting in its second season
What was Monk's theme song in season 1
During the first season of Monk, the series used a jazzy instrumental introduction to the show by songwriter Jeff Beal

Question: Who performed the theme song
Self-contained rewrite: Who performed Monk's theme song in season 1