iTune shop is now selling a special charity CD album 'Songs for Japan' for $9.99 (US). This album includes exclusive 38 popular artists supported by the four major record labels working together to raise funds for Japan.
http://itunes.apple.com/us/album/songs-for-japan/id428401715
http://itunes.apple.com/us/album/songs-for-japan/id428401715
