Verity Sharp reports on events at the LMC Festival of Experimental Music. Last weekend's event had a Japanese focus and featured Toshimam Nakamura. a key figure in Tokyo's underground "onkyo" scene, who uses only feedback to carve elaborate slabs of sound. Plus a project for trio and trashed electronics by Lee Ranaldo of art-rockers Sonic Youth, and the musical assemblages of Canadian turntable artist Martin Tetreault.