We now know the title for True Blood Season 4, Episode 10, finally. The title is “The world’s a mess, it’s in my kiss”.
And the best guess at the song that represents the episode is in the video below. It seems like this must be the one since, how many songs do you think are out there with a title like this? Not many, I’d guess:
source: Bookies: True Blood on Facebook
video source: YouTube