The surprising duo of Robert Plant and Alison Krauss have been added to the list of performing artists for the 51st Annual Grammy Awards. They will be joining musical heavy hitters Kenny Chesney, Carrie Underwood, Kid Rock, U2, Coldplay, Paul McCartney and many others.The pair is also up for a staggering five awards, including Album of the Year and Best Folk/Americana Album for Raising Sand, Record of the Year for "Please Read the Letter," Best Pop Collaboration with Vocals for "Rich Woman" and Best Country Collaboration with Vocals for "Killing the Blues." The show will air live on Sunday, Feb. 8, on CBS.
