If in everything that pertains ti music we find ourselves within the play-sphere, the same is true in even higher degree of music’s twin sister, the dance. Whether we think of the sacred or magical dances of savages, of the Greek ritual dances, or of the dancing of King David before the Ark of the Covenant, or of the dance simply as part of a festival, it is always at all periods and with all peoples pure play, the purest and most perfect form of play that exists.