Red Queen to Gryphon Three, by Gryphon (1974): Progressive rock is often derided for being pretentious and overly cerebral. Certainly, this album would be evidence of that. A concept album about chess? You betcha'! Thankfully, it's all instrumental, so we're spared lyrics about castling, Alekhine's gun, or hanging pawns. But the last movement is called "Checkmate." And there's bassoon. Lots of bassoon. Rock and roll bassoon. And krumhorn. It's great!