Related Clues:

• Sonny and Cher, e.g.
• You, me and a mike
• Ashford & Simpson, for one
• Two boots
• Piece marked "piano, four hands," obviously
• The Captain and Tennille, e.g.
• Dynamic --
• Carpenters' work?
• Ark set
• ''Up Where We Belong,'' e.g.
• The Judds, for example
• "Tea for Two," for one
• Tango complement
• Socks purchase
• Smallest possible team