CBS announced the nominees for the 53rd annual Grammy Awards. Marshall leads all nods with 10 while Bruno Mars pulls in seven with Jay-Z racking in six. John Legend and B.o.B. each have five nods. Meanwhile Drake, Rihanna, and Cee-Lo follow right behind with four. Ceremony airs at the Staples Center in L.A. February 13th at 8 pm EST on CBS.