His stormy relationship with Tyler has pushed Aerosmith to the edge of collapse on a number of occasions. Perry says of the partnership today: "Steve has become more driven and hungry for acceptance and fame than he was in the 70s, or even the early 80s. He was more of a team player back then.

"Even when I first met him I knew he was going to be a handful. There was something about him that was off. But everybody is quirky - he's also an incredibly talented musician and drummer with an incredible voice. I figured whatever comes along with that package I can deal with."