Weepr: a free tenori-on -lite

[Koant]

I was looking for a software alternative for a tenori-on (coolest musical instrument but at £780 it's way above budget for me) and came across Weepr, a free program with a similar interface, which runs on Adobe Air.
Demo:
http://www.vimeo.com/1248311
(the one I downloaded has more options, including saving your music.)
See also: http://support.weepr.com/index.html

I found it really cool and wanted to share. But if you're after more sophisticated stuff, you might want to look at André Michelle's hobnox.