Lambda the Ultimate

There was a reddit link to the following a very interesting website about live programming music in scheme. That page has a very interesting video showing someone 'programming' in scheme by dragging and dropping rectangles. It is interesting how scheme's parenthesis are replaced by a pseudo 3d surface, with depth of the layers signifying nested parens. The wiki link on that page also has a few interesting screenshots. Following links on that page eventually leads to fluxus which has lots of examples of live music, animation, etc. The tutorial videos there are also very interesting.

LtU has many discussions on FRP and live programming, but any one know of any papers published about this work? Is this just a variation of FrTime or CELLS or is their technique different?