The month long event, which kicked off on September 1st with a performance from Usher, now has a complete bill with Madness headlining the Roundhouse in Camden on September 27th.
Sheffield band Revered and The Makers will support on the night.
So far the iTunes festival has seen performances from the likes of Elbow, Deadmau5, Jack White, Plan B and Ed Sheeran. Highlights of this weeks' bill include Noel Gallagher's High Flying Birds, The Killers and David Guetta.
The full iTunes line-up is as follows:
Norah Jones, Beth Orton (September 10)
The Killers, Jake Bugg (11)
Noel Gallagher's High Flying Birds, The Soundtrack Of Our Lives (12)
Pink, Walk The Moon (13)
Labrinth, Josh Kumra (14)
David Guetta, Calvin Harris (15)
Rebecca Ferguson (16)
Example, DJ Fresh, Hadouken! (17)
Andrea Bocelli, Laura Wright, CARisMA (18)
Matchbox Twenty, OneRepublic (19)
One Direction, Angel (20)
Jessie J, Lonsdale Boys Club (21)
Biffy Clyro, Frightened Rabbit (22)
Robert Glasper, Jose James (23)
Mumford & Sons, Willy Mason (24)
Lana Del Rey, Benjamin Francis Leftwich (25)
Ellie Goulding, Haim (26)
Madness, Reverend And The Makers (27)
Alicia Keys, Lianne La Havas (28)
Hot Chip, Kindness (29)
Lana Del Rey, Noel Gallgher: who's playing iTunes festival 2012?