Lindy Hop (or Jitterbug) is a street dance that developed in the black-American community of Harlem (New York) in the late 1920s, in parallel with jazz and more particularly swing. It is a mixture of several dances from all over the United States from the 1900s, mainly the Charleston, the Breakaway and the Collegiate. Lindy Hop uses the improvised movements of African dances with the discipline of the 6 and 8 beat structure of European dances. Lindy is a rich and diverse dance, a mixture of couple and separate dance, coming from its mixed origins. It is danced to Swing music. It is the ancestor of rock which approaches it by the musical style and the basic step. However, where the rhythm of the rock is more square, the lindy approaches the boogie woogie with a "swinging" style, rounded.