The Lindy hop is an American dance that evolved in Harlem, New York City, in the 1920s and 1930s and originally evolved with the jazz music of that time. It was very popular during the Swing era of the late 1930s and early 1940s. Lindy was a fusion of many dances that preceded it or were popular during its development but is mainly based on jazz, tap, breakaway and Charleston. It is frequently described as a jazz dance and is a member of the swing dance family.