Singer Skylar Grey revealed on Twitter that she will also be performing at Sunday's WrestleMania 29 event…

"I'll be performing w/ ‪@iamdiddy‬ at ‪@WrestleMania‬ Sunday, April 7th live on Pay Per View!! Its ‪@JohnCena‬ vs ‪@TheRock‬"

Grey performs the WrestleMania theme song "Coming Home" along with Sean "Diddy" Combs.