Interesting, not just that the majority of the female "singers" were just one person. I always thought that the actresses sang it, just overdubbed and stylised. Explains now why they all sound similar.
Australian's don't have the best rep for US accents - see Mad Max for example. Yes his acent is spot on. This is also one of the worst interviews I've ever heard. The new TP is fucking awesome btw, the way I always wanted it to be. Yes, I remember all versions.