[Mithisilien]

I understand your point, but I took the liberty of comparing the movie, soundtrack, and sheet music versions and found them to be all in the same key signature. There aren't multiple editions considering the easy key signature the movie version is in. I'm not trying to trick anyone here ...but seeing how no one seems to be getting this, I'll give the answer. The key has one sharp, indicating G major, but it begins and ends on a minor triad, which tells us that it has to be in a minor key, so it is in the key of E MINOR! (c'mon guys, relative minor, three half-steps down...)