LOS ANGELES (TheWrap.com): The Black Keys have previously been known for a blues-based sound, which put their roots in the Mesozoic era, by modern standards. But with their stunning new ''El Camino,'' they hark back to a different epoch of dinosaur rock, sounding like ... T. Rex.

That's right, they've gone glam - gloriously. The two-piece outfit's formerly stripped-down core sound has been thickened up into something much more akin to Led Zeppelin's version of the blues, but with handclaps and female backing vocals.