Yeah, you're right. It was kind of smart for her to do it that way because it's leaving us guessing and making us even more curious and excited about it.
EDIT: You no longer have to guess what "Heart In Chains" sounds like!
http://music-mix.ew.com/2011/04/25/k...art-in-chains/
AND in case anyone wasn't already super pumped for the album - here is "Enough For Always!"
http://ca.eonline.com/uberblog/watch...new_album.html
I've been updating the OP of this thread almost daily with new stuff. This is so exciting!