The piano version, as simple as it is, is already wonderful, but the *real* version is awesome. Funny enough, I'd tagged the piano version as "If You Believe (piano version)" all along. Can't remember why, but somehow I must have got the idea - which proved correct in the end - that there must be another, full version! Or wait - actually it was Musicbrainz that included the "(piano version)"!
I has a sad that no one else wants to talk about how amazing it is ;( Maybe it'll get around soon. I've been scrobbling it as this all along, since Tarja introduced it as this in the 2009 live bootlegs, she didn't say "this is the piano version," THANKS TARJA :P