This is great! Glass Engine http://www.philipglass.com/glassengine/
Composer Philip Glass is best know for reviving opera, contributing works to the minimalist movement, and composing some of the more haunting works in this century. Through dedicated research, IBM has developed an engine designed to analyze and play sixty compositions from the huge body of Glass's work, with a unique playback engine that categorizes music through a series of relationships and emotions in groups of sliding bars. By moving the bars on the page, you can find types of selections you'd like to hear. Currently the plugin only works with IE.
