Who Sings Theme Song You think you know you?

The theme song for the game show "You Think You Know You?" is actually not a song with lyrics. It's an instrumental piece with a distinctive, somewhat suspenseful melody.

The composer of the theme song is Peter Schickele. He's a renowned composer known for his comedic musical works, including the "P.D.Q. Bach" series.

While the theme song doesn't have vocals, it's very recognizable and instantly evokes the atmosphere of the show.