Evan Agostini, AP
Jason Aldean, Lady Gaga, Sugarland, Rihanna, Usher, Ludacris and Lupe Fiasco join the country trio as the night's performers on the one-hour broadcast. Plus, details about a "truly iconic group" that will reunite for the first time on this year's Grammy stage will be announced. Rapper/actor LL Cool J will host the show, which in addition to live performances will also include the big reveal of nominees in several categories for the 2012 Grammy Awards.
After their performance on the live TV show, siblings Kimberly, Reid and Neil Perry will also play their own exclusive concert for the fans at Nokia Theatre.
The 54th Annual Grammy Awards will air live from Los Angeles' Staples Center, Feb. 12 at 8:00 PM ET on CBS.