KEY STROKES

Honoring one of the greatest albums in history--from an artist who's won 25 Grammy trophies over his lifetime, the superstars are lining up to pay tribute to Stevie Wonder: Songs In The Key Of Life-- An All-Star Grammy Salute.

Today The Band Perry, Ariana Grande, Lady Gaga, and John Legend were added to a performance lineup that already includes Janelle Monae, Ed Sheeran, and Usher.

The show, hosted by Grammy night master of ceremonies LL Cool J, will be taped live at the Nokia Theatre on 2/10 and is set to air as a two-hour CBS primetime special 2/16. And because Ken Erlich doesn't already have enough to do, he's Executive producer of this special as well.