Eminem, Lady Gaga set for Grammy performances

Eminem, Lady Gaga and Arcade Fire are set to perform on this year's Grammys on Feb. 13, along with Katy Perry, Cee Lo Green and Miranda Lambert, the Recording Academy announced this morning.
    
It's pretty much a sure thing that Em will perform something from his “Recovery” album, which has a leading 10 nominations this year.
    
But what about Ga? She tweeted on New Year's Eve that her single “Born This Way” would drop on Grammy night, where she has six nominations, including album of the year for “The Fame Monster.” What better way to launch the song, which will also be part of a “Glee” story arc this season, than a performance on music's biggest night?
    
Of course, what she'll be performing will be as much a secret as what she'll be wearing.