Who played the harmonica on the theme song for in the heat of the night?

The harmonica on the theme song for "In the Heat of the Night" was played by the legendary musician, jazz and blues artist, and harmonica virtuoso, Charlie Musselwhite. The show's theme, composed by Quincy Jones, features Musselwhite’s distinctive harmonica playing, which adds to the show's soulful atmosphere. The theme became iconic and is closely associated with the series.