Alison Mosshart used to be in the Kills and now is with the Dead Weather.
I like this interview, but I encourage you to also watch some of the music videos from those two bands as well, if you like.
YouTube - IN BED WITH THE KILLS
"you do take roles on, you do become what you're singing about, it means something to you, you wrote it, you know, it comes from somewhere and it turns into something else...really physical...emotional, you know"