Darwin thought our ancestors used music as a means of courtship before the invention of language. Other experts have suggested that humming and stomping whipped early man into a communal "battle trance." Whatever the case, rhythm has been part of the human experience for as long as there's been a human experience. This app is meant to put you back in touch with that evolutionary birthright.

Rhythm Necklace is a simple toy for exploring complex rhythms. It's built around an alternate form of notation called a "rhythm necklace," in which musical patterns are represented in circular form. The advantage of the circle is that it lets you see rhythm as a series of shapes.