WTF?? Dude was the best match in the world for the band, his performance on the two albums he did simply took Opeth to the next level. This is the saddest "band member leaving" news I've heard so far, it hits me more than KK or Loomis without a doubt. They better get the next fucking Jon Lord now or drop the keyboards alltogether cause it's gonna be tough to match Per.
Edit: Source http://www.metalinsider.net/splits/opeth-split-with-keyboardist
Edit: Source http://www.metalinsider.net/splits/opeth-split-with-keyboardist