"Great Gig in the Sky" can't fly without the stratospheric climaxes of Claire Torry, whose vocal exploration of the border between soaring and screaming mirrored the songs' exploration of life and death. The rest of Dark Side has easier vocal ground to cover, but there's no voice on Revisited as expressive as Gilmour's or Waters's. Enchant's "Us and Them" completely misses Gilmour's placid innocence and the terrifying chaos of the battle-like choruses. With the original album still printed by the millions, and even a gold-master edition available, this tribute is inspired by the Moon only in that it's a mystery.

-- Jason Demerjian