No amount of show-business savvy could prevent jitters leading up to the most demanding scene for Christina Milian in "Be Cool" — a duet with Steven Tyler on "Cryin'", performed at a real-life AEROSMITH concert. "I was really intimidated going in to do that with him," Milian admitted to Bob Strauss of the Los Angeles Daily News. "He's been doing it for a while, plus I come from more of a history of R&B pop music. Going in to do a rock song that's his own, in front of an audience of 30,000 people that were there to see an AEROSMITH concert in Boston.... But actually, I'd say it was the highlight of my whole life. We shot it three times in the middle of their show, and every single time, the chemistry that Steven and I had was so natural as performers, it just felt so good. The energy that we got from each other — on one microphone! I, like, want to be a rock star!" Read more.