Bet you all were expecting me to choose "Winter", weren't you? Well you know me. I like to keep things...unpredictable. The delicate piano part mirrors the settling of the snow, as the flakes freeze into something harder, colder. And then they let go into Spring, in a magnificent release (the song also describes a whole other kind of release in great detail ::blushes::).
I cannot tell the story of the song better than Tori herself can (oh how wonderfully witty she used to be before her "earth mother" phase). The blasphemy comes free, as does the Robert Plant impersonation.