Jazz dance is a classification shared by a broad range of dance styles, originating from AfricanAmerican vernacular dance. Beginning in the 1930s and continuing through the 1960s, Jazz dance transformed from this vernacular form into a theatre-based performance form of dance. Its continual development gives rise to fusion of Jazz dance with other styles such as street dance and contemporary dance, though retaining its characteristics of body isolations, low centre of gravity, and movement vocabulary such as ball change, chasse and chaines.