I had no idea. It's also not bad if I can forget that it's Billy Joel. I didn't listen to the whole thing, just spot-checked a few different parts. It's strange how a lot of the music that I'd associate with the 60's by the way it sounds, was actually made in the 70's. The middle of the album definitely has Spinal Tap vibes where they're playing a free-form jazz odyssey in a state park.