It's from Hyannis Sound, a group in Cape Cod. It's absolutely. BEAUTIFUL. A must listen, seriously.
If you've been wanting to help, but didn't want to donate $5 "for nothing," you can buy this awesome song on iTunes for 99 cents and all of the proceeds go straight to the relief efforts.
The video got me, for sure. It was the perfect music to all of those clips and pictures. I can't even imagine if something like that were to happen here.