Alicia Keys has promised a "crazy" show when she takes to the stage at the iTunes Festival.
The Grammy-winning songstress is set to unveil some of the tracks from her new upcoming album Girl On Fire, including new single New Day, when she headlines the Roundhouse in London on September 28.
"It's gonna be a CRAZY show! I'm always inspired by the energy of the fans in London. I can't wait to share my new album and play some of these new songs in London!" she said.
Alicia Keys' new album artwork
The mother-of-one, who previously performed at the Roundhouse for a black-tie charity gig in aid of her Keep A Child Alive foundation in 2011, added: "The Roundhouse is an amazing venue and I love that this is a festival truly for fans - free and broadcast live - so anyone in the world can be a part of it."
LISTEN: Alicia Keys' first single from her new album, New Day
Alicia, whose album will be released on November 26, joins the star-studded line-up for the month-long concerts, which already includes Deadmau5, Norah Jones, The Killers, Jack White, Noel Gallagher, Elbow, Andrea Bocelli and Lana Del Rey.
Usher will open the festival on September 1, while British stars Plan B, One Direction, JLS, Conor Maynard, Olly Murs and Jessie J will also play.
Tickets are free for competition winners and the shows will be available to view online.
And here's a look at Alicia's incredible style evolution...