I read it was 3 hours.
And this is a prime example of why Americans need to start liking power (and all kinds of) metal. I've never seen Avantasia, but I'm convinced that this would be one of the greatest concerts ever. Sadly, they'll never come over here, but at least they put out a DVD last year.
12/17 - Gorguts (?)
2/16 - Children of Bodom/Death Angel (?)
3/1 - Metal Church