Possible Clues:

• When Tevye sings "If I Were a Rich Man"
• Play beginner
• Start of ''Cymbeline,'' e.g.
• Lights-out time
• "Macbeth" opener
• First portion of a play
• When to open the curtain
• When the shipwreck occurs in 'The Tempest'
• Broadway beginning
• First part of 'The Nutcracker'