Rihanna, Usher to Perform at Grammy Nominations Concert on Nov. 30

Four-time Grammy winner Rihanna, seven-time Grammy winner Usher, and country music sensation The Band Perry are set to perform at the upcoming "Grammy Nominations Concert Live" on Nov. 30, 2011 at the Nokia Theatre in Los Angeles.

Joining them in the performer line-up are previously-announced Jason Aldean, Lady GaGa, Ludacris, Lupe Fiasco and Sugarland.

The main event will take place on February 12, 2012.