Percussa micro super signal processor

In Europe and jealous of the USA's Laptop Battles? Laptop-Jams
is set for this summer in London, Brighton, Glastonbury, and even
Denmark. Instead of going solo, up to three will jam simultaneously,
but no more than three at a time (unlike New York's Share party, where jams are basically unlimited).

The good news is, you can show up with a 2-octave keyboard, which is
verboten at the Laptop Battles here. And video cameras will monitor
what you're doing, so people don't just have to watch "glowing Apple
[logos] & thousand yard stares." It's all good fun — not a
competition, a la the battles.