LL Cool J is hosting the event which will air on CBS from 8-11:30pm ET/PT.
Already announced to perform are Adele (in her first live performance since undergoing vocal cord surgery last fall), Jason Aldean and Kelly Clarkson, Glen Campbell with The Band Perry and Blake Shelton, Coldplay and Rihanna, Foo Fighters, Bruno Mars, Paul McCartney, Nicki Minaj, Katy Perry, Bruce Springsteen and The E Street Band, and Taylor Swift.
Previously announced presenters are Dierks Bentley, Jack Black, Drake, Fergie, Miranda Lambert, Gwyneth Paltrow, Ahmir “?uestlove” Thompson, and Ringo Starr.
Source: The Recording Academy – February 7, 2012