Robert Plant (C) and Alison Krauss (L) perform with T-Bone Burnett (R) at the 51st annual Grammy Awards in Los Angeles, February 8, 2009. [Agencies]

Robert Plant (2nd L), Allison Krauss (3rd L) and T Bone Burnett (C), along with other winners, hold their awards for Album of the Year for "Raising Sand" and Record of the Year for "Please Read the Letter" at the 51st annual Grammy Awards in Los Angeles February 8, 2009. [Agencies]