Possible Clues:

• Show often ending with a reprise
• Tommy, for one, thus replaces centre of wall-painting
• Man shortly to tour America in charge of show
• Many a Tony winner
• Theatrical production featuring songs and dancing
• Typical Busby Berkeley film
• Pleasant-sounding American entering phoney claim
• Some hippopotamus I call Oliver perhaps
• It contains many numbers
• “I’m just a ____ prostitute, my dear” (Freddie Mercury)