For those of you in the UK, thought it worth mentioning that Martin Brandlmayr's band Radian are playing live at Koko (Camden) on May 15th. Martin's amazing drumming work formed the basis of David's Sleepwalker track.
The gig is the closing event of the 2011 Net audio festival and they are playing support for Nurse With Wound and a collaboration between Bruce Gilbert (ex-Wire) and Mika Vainio (ex Pan-Sonic).
To my mind they should be higher on the bill, but there you go. The website below gives details and has a link to some youtube video of them playing live. I have been listening a lot to their three albums out on Thrill Jockey Records and I think they are superb - they remind me a lot of Can in the sound and the way live performances are manipulated and edited into something extraordinary.
http://www.netaudiolondon.cc/blog/192/nurse-with-wound-radian-mika-vainio-bruce-gilbert