Contemporary dance can express many different emotions through telling stories with body movements and facial expressions. It is similar to modern dance and jazz in being lyrical and using full body expression, but differs from ballet in being more relaxed. The history of contemporary dance began before the 1950s and major early figures included Martha Graham, though its exact origins are unknown. Music plays an important role in conveying the emotion of a contemporary dance performance. Dancers may wear socks, jazz shoes, or foot undies.