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Underclass Hero marks a step in a bold new direction for Sum 41, whose three full-length albums, 2001's All Killer No Filler, 2002's Does This Look Infected and 2004's Chuck, have sold over seven million units worldwide."We haven't been this together since our first album,"boasts singer/songwriter/guitarist Deryck Whibley."I would only have done this record if everyone was into it. There was no point otherwise. There was a lot of negative energy out there."