Def Leppard roaring with best-of disc

Call it a matter of pride. Classic rockers Def Leppard may not mind singing about the Rock of Ages, but even after nearly three decades on the prowl, they still want people to think of them as hip cats.

"If you're perceived like a bunch of old grandpas, no one will buy into that," says long time guitarist Phil Collen over the phone before a gig in Memphis, Tenn.

Back in their big-haired, '80s prime, the rock outfit didn't have an uncool bone in their much-adored bodies. They were dubbed one of the world's biggest bands after the release of 1987's Hysteria, which turned out seven singles and sold 16 million of the 65 million albums they've moved since their 1977 inception.

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