Ellie Goulding has been added to the line up of the iTunes festival.

'The Writer' singer will perform on at London's Roundhouse venue on September 26, where she is expected to debut new material from her second album, 'Halcyon'.

Ellie recently announced the album, and said it deals with heartbreak - possibly inspired by her split from DJ boyfriend Greg James in January this year.

She said: ''This album for me is a Journey from dark into light, from confusion to understanding. I didn't set out to write a break-up record but I think it became one.

''I'm so incredibly proud of this record, I really can't wait for you all to hear it. Going to post a little teaser later this week I think.''

Meanwhile OneRepublic have also been added to the month-long bill for the iTunes Festival, a free event, supporting Matchbox Twenty on September 19.

Other acts recently added include Elbow and Bat For Lashes, who will take to the stage on September 7, while Hot Chip will headline on September 29th.

Other stars already confirmed to perform include Pink, Jack White, One Direction and Lana Del Rey.

To register to win tickets, download the app for free from the iTunes store or visit www.itunesfestival.com/gb/win

iTunes Festival 2012, current line up:

September 1: Usher

September 2: Ed Sheeran, Charli XCX

September 3: Olly Murs, The Milk

September 4: Plan B

September 5: Emeli Sandé

September 6: JLS, Conor Maynard

September 7: Elbow, Bat For Lashes

September 8: Jack White, Band Of Horses

September 9: Deadmau5

September 10: Norah Jones

September 12: Noel Gallagher's High Flying Birds, The Soundtrack of Our Lives

September 13: Pink, Walk The Moon

September 14: Labrinth, Josh Kumra

September 15: Calvin Harris, David Guetta

September 16: Rebecca Ferguson

September 17: Example, Hadouken!, Dj Fresh

September 18: Andrea Bocelli

September 19: Matchbox Twenty, One Republic

September 20: One Direction

September 21: Jessie J, Lonsdale Boys Club

September 22: Biffy Clyro, Frightened Rabbit

September 23: Robert Glasper

September 24: Mumford & Sons

September 25: Lana Del Rey

September 26: Ellie Goulding

September 29: Hot Chip