Add The Lumineers, Jack White and Carrie Underwood to your list of performers for the 55th Annual Grammy Awards telecast. But that’s not all, folks. In a pair of signature Ken Ehrlich moments, Dierks Bentley and Miranda Lambert will be paired in a “special performance,” while Elton John and Ed Sheeran will perform live together for the first time. They join previously announced performers The Black Keys, fun., Mumford & Sons, Rihanna and Taylor Swift. LL Cool J returns as host. [HitsDailyDouble]