^ Exactly! They're not singing the whole song in the concerts, are they? I don't think so... probably just the same that they showed in the teaser. And you're so right, it ruins the surprise for fans as well... I'm sure the sales of the single will still be amazingly high, but it's not as fun when the whole song is already out there :( that's why I've only listened to the teaser (which I LOVE) and not the whole thing!
Actually, one good part is that the few audios with the full song HQ version were either deleted or taken out (I think all, maybe some are still lurking). Most of the links now with the whole song are an LQ version... which is not that good. In LQ, the background music really overpowers the voices... which means the actual actual song is not really released! Yay! xD
I think Stand By You is going to be a top song... I know how beautiful Doushite is and how well that did, Stand By You is going to do amazingly well too! I looooove their ballads! Though this one is not as ballad-y as their other ones... but let me stop talking now. Heehee! :P