The Greatest __; Musical About Barnum Circus
Puzzle 9 of Christmas Carols Piece of Cake Pack
Question is: The Greatest __; Musical About Barnum Circus
and the answer is: SHOWMAN
Word Meaning:
SHOWMAN — A person (usually a man) involved in putting on shows (of various types); especially, one who plays a central role in doing so.
Definitions from Wiktionary.