I remember reading an interview where Devin mentions her. To be precisely, he said that he would like to "produce the fuck out of Christina Aguilera"
I think the interviewer asked him about what this meant, and if I remember correctly, Dev basically says that he really respects her singing and would like to take her musically as far as possible.
This was some years ago, I think... Is he still willing to do this? If so, we just have to make sure Christina Aguilera gets a copy of, let's say,
City... From then on, things should happen very quickly
