Lang Lang, left, and James Hetfield of Metallica, perform "One" at the 56th annual Grammy Awards at Staples Center on Sunday, Jan. 26, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP)... more 
Lang Lang, left, and James Hetfield of Metallica, perform "One" at the 56th annual Grammy Awards at Staples Center on Sunday, Jan. 26, 2014, in Los Angeles. (Photo by Matt Sayles/Invision/AP) less 
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Associated Press
Mon, Jan 27, 2014 7:12 AM EST