This Friday, September 11 (3:30pm London time), and Sunday, September 13 (7:00pm London time), Resonance FM will broadcast a 30 minute performance by Seth Horvitz which took place recently in the concert hall at Mills College in Oakland, CA.
Here is a description:
Six separate channels of recorded audio were mixed and routed live through four different amplified speakers - two overhead, one guitar amplifier placed beneath a grand piano (with damper pedal depressed), and one tiny speaker placed below the stage. The audio material consisted of recordings of a Serge modular analog system and a Yamaha CS-50 analog synthesizer, with no external processing. The piano was also played at various times throughout the performance, but an effort was always made to create a unified aggregate sound.
Check the Resonance website for details - they are one of the best FM/web radio stations on the planet!
http://resonancefm.com/