Help Japan compiles remixes (Radiohead, Regina Spektor, Matisyahu) and original tracks in genres spanning folk, chilled instrumental electronica, dubstep, klezmer, indie, performance poetry and more. It's available on Bandcamp at the starting price of £2 and will later be released as a CD. You can also name your price and receive physical bonus material if you donate more than £15 (an iPhone app, videos to download, merch, CDs... the more you spend, the more you receive!).
Curator Steve Paul, who also wrote an important part of the music presented here, explains about the project in this Raised By Records interview. All proceeds going to British Red Cross Japan Tsunami Appeal.