Related Clues:

• Two-piece
• Piano piece with "primo" and "secondo" parts, e.g.
• Number divided by two?
• Twosome on stage
• Indigo Girls, for example
• Grammy-winning Gnarls Barkley, e.g.
• Something one can never do?
• Four-hand piano piece
• Something one singer can never do
• "Say Say Say," say
• Dynamic ___ (Batman and Robin)
• Hall and Oates, e.g.
• Small 52-Across
• Comedy team, usually
• What you, me and a mike create