Blues, Metal Kings Rock Bonnaroo

Metallica, B.B. King rock, Kanye finally takes stage at 4:30 a.m.

Blues, Metal Kings Rock Bonnaroo

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Led Zeppelin lead singer Robert Plant and bluegrass artist Alison Krauss performed tunes from their 2007 release "Raising Sand," which was produced by T-Bone Burnett. (Mark Humphrey/AP Photo)
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