A caller is a person who prompts dance figures in such dances as line dance, square dance, and contra dance. The caller might be one of the participating dancers, though in modern country dance this is rare.

A square dance is a dance for four couples, or eight dancers in total, arranged in a square, with one couple on each side, facing the middle of the square. Square dances are part of a broad spectrum of dances known by various names: country dances, traditional dances, folk dances, barn dances, ceilidh dances, contra dances, Playford dances, etc. These dances appear in over 100 different formations, of which the Square and the Longways Set are by far the most popular formations.