Need any more clues?

OK, I did give out the answer to my trivia question on Tuesday, but it just occurred to me that some who read the blog may not have it yet. Do you need another clue??? How about this one: Bobby and Cissy. John Wills used to refer to some of the colorful dancers on the various Vegas floors as Bobby and Cissy. So now you got it. "Keep a song in your heart" was the weekly sign-off of Lawrence Welk.