As mentioned before, Norwegian experimental "sound art" artists Alog, Jana Winderen and Alexander Rishaug/Marius Watz are heading to Japan at the end of the month for a few performances:
10/22 - AD&A Gallery, Osaka (info)
10/24 - Superdeluxe, Tokyo (info)
See the above info links for more details on each of the artists and the work they will be performing.