Let me start off by saying I am a big fan of Christina, And i think a voice and style like hers is very hard to come by. And with that being said, I would love to hear her cover Pink Floyd's Great Gig in the Sky.
It seem to be a favorite of those wantabe singer who think they have the chops to pull it off. and though some come close, most fall short of a viable remake.
This song, to me is a perfect song for her. rarely is there an oprotunity to remake a classic rock song and make it better than the original...not that this is what anyone set out to do. but the reality of it is this. Some song are just meant to be done by certain indiviuals. and the marrage of these to entities are destin to merge. and if it never happens it would be a entertaiment travesty.