Paul Weller, The Pretenders and CSS are some of the headline acts confirmed for the iTunes festival due to take place at Koko in Camden Town throughout July.
Weller, who hit number 1 in the album charts with 22 Dreams this month, will play the historic London venue on July 2.
Other acts appearing include: Sam Sparro, N.E.R.D., Chaka Khan, Death Cab For Cutie, The Ting Tings, Jamie Lidell, Pendulum, Gabriella Cilmi, Guillemots and Lightspeed Champion.
All of the gigs will be recorded live and available to download.
Tickets for the free festival can only be obtained by winning a competition run on the iTunes website.