I think Up is a truly excellent album. Music has depth, feeling and moments of sheer beauty. It's not lighthearted stuff, it's dark (as ODV2 pointed out) and it's not music for the radio or for MTV. You will need more than a couple of listenings to get it, but I think it's really really good.

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"Don't you know there ain't no devil, it's just god when he's drunk." Tom Waits