Muxicall is a collaborative music making tool created by Diana Antunes, a student on the New Technologies of Communication degree at the University of Aveiro in Portugal. It's based around the idea of up to 8 people improvising at once. Although there's no particularly ground-breaking technology here and the actual music making interface could be easier to use, it's a great idea and it's beautifully crafted too. The addition of a splash of colour (based on an Issac Newton theory apparently) for each musical note, means that when a few people are playing at once, the experience is quite mesmerising. Enjoy!