Square ance is a folk dance with four couples (eight dancers) arranged in a square, with one couple on each side, beginning with Couple 1 facing away from the music and going counter-clockwise until getting to Couple 4. Couples 1 and 3 are known as the head couples, while Couples 2 and 4 are the side couples. Each dance begins and ends each sequence with "sets-in-order" in the square formation. The dance was first described in 17th century England but was also quite common in France and throughout Europe and bears a marked similarity to Scottish Country Dancing. It has become associated with the United States of America due to its historic development in that country. Nineteen U.S. states have designated it as their official state dance.