Def Leppard's cover album surprises

The sad slide into obscurity for once beloved music acts often involves new adult pop tunes, greatest hits collections, cover albums and perhaps even a record of holiday songs.

In the past couple years, mega rockers Def Leppard seemed to be sliding down that slippery has-been slope.

The '80s rockers were caught acting their age on their previous studio album, 2002's "X," and last year the band put out a 25th anniversary hits compilation called "Rock of Ages: The Definitive Collection." On Tuesday Def Leppard released a cover album.

But don't be so quick to judge — "Yeah!" is a surprisingly fun album.

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