Related Clues:

• Do a ringmaster's job?
• Request from the peanut gallery, perhaps
• Sondheim song, and a hint to the ends of 17-, 28- and 44-Across
• A ringmaster will do it
• Sad song in Welsh - contends with translation
• Sondheim song that starts 'Isn't it rich?'
• Sondheim's ''Isn't it rich?'' tune