British folk band Mumford & Sons have been added to the bill for the month-long iTunes Festival and will play on September 24.
The Island-signed group will take the stage at The Roundhouse in London to coincide with the release of their new album Babel.
They are the latest act added to the line-up, following Matchbox Twenty who were revealed as performers last week.
Tickets are free for competition winners only.
There is an official free iTunes Festival app that enables users to apply for tickets and watch the shows live or on repeat for a limited time.
The current line-up is as follows:
September 1: Usher
September 2: Ed Sheeran + Charli XCX
September 3: Olly Murs
September 4: Plan B
September 5: Emeli Sandé
September 6: JLS
September 8: Jack White
September 9: Deadmau5
September 10: Norah Jones
September 12: Noel Gallagher's High Flying Birds + The Soundtrack of Our Lives
September 13: P!NK
September 14: Labrinth + Josh Kumra
September 15: David Guetta
September 16: Rebecca Ferguson
September 18: Andrea Bocelli
September 19: Matchbox Twenty
September 20: One Direction
September 21: Jessie J + Lonsdale Boys Club
September 22: Biffy Clyro + Frightened Rabbit
September 24: Mumford & Sons