A bit of laptopism for you (more details at the official site). From REALTOKYO:
An “orchestra” concert organized by musician and university assistant professor Christophe Charles sounds like a pretty academic affair. In reality, though, the laptop orchestra sessions are happening in a private house in Ryogoku, where you can either participate with your own gear, or lie on the floor and just listen. This is the second occasion for all those interested in pursuing the possibilities of laptop computers and software in experimental sessions, and those who just like to listen to these in realtime. The results will be published on the Internet, but to witness on the spot how the remixes come out at the end of the chain of computers sounds like the biggest fun. Space is limited, so don’t wait to send an email and make your reservation.
Update: The person behind the event is actually Philippe Chatelain.