Related Clues:

• M
• See 23-Across
• Twice 79-Down
• Small bill
• Lily Pons specialty
• Unique
• Half and half
• Early afternoon
• Identical
• I, to Claudius
• Verdi's 'D'amor sull'ali rosee,' e.g.
• Recital piece
• A wee hour
• Soprano's song, maybe
• Last number in a countdown