Robert Plant and Allison Krauss came together to make a great album of roots blues rock music this year. It was heaped with praise and amply awarded. You remember Plant as the lead singer in the Golden Hindenburg (see clip) and Krauss as a simple washer woman in Dogpatch, USA, but together, well...just listen. Good stuff.
(The video of Plant & Krauss was pulled due to questions of copyright infringement, so here is a replacement clip of Plant's old band from the gloriously excessive '70s)
Hear Plant and Krauss sing "Please Read the Letter" from their album Raising Sand--just click the button: