The show's main title featured three versions of the theme song written by Vera Matson and Lionel Newman (although the lyrics were written by Ken Darby, credited under the name of his wife Matson).Jon Burlingame, p. 76, TV's Biggest Hits: The Story Of Television Themes From "Dragnet" To "Friends", Schirmer Books, 1995, The third "groovy version" was sung by The Imperials.
