Musical tables

I'm gearing up to do a series of acoustic artworks and have been looking at what is out there. Golan Levin's Scrapple (2005) is quite cool:



Surprising similiar to Scrapple is the Reactable (see video below) which was developed at Pompeu Fabra University in Barcelona. Since the two projects came out at almost the same time, it seems they the artist/developers simply came up with similar ideas independently, with a couple of notable differences.

Scrapple's table acts as a score and objects placed on it are interpreted into sound chronologically, whereas the Reactable is more amorphous in terms of how objects' sounds relate to time. Also, the Reactable has specific objects that are dedicated for generating or manipulating particular sounds, whereas Scrapple will interpret any object placed upon it (which seems particularly interesting to me). I suspect that the Reactable is more flexible in the sounds it can create, while Scrapple is more intuitive in its usage.