Jessie J and Timberlake headline at iTunes Festival

Justin Timberlake who along with Jessie J and Queens of the Stone Age are among the headline acts for this year's iTunes Festival. Credit: Dominic Lipinski/PA Wire

Justin Timberlake, Jessie J and Queens of the Stone Age are among the headline acts for this year's iTunes Festival in London.

The free series of events will include more than 60 acts to be performed throughout September at London's Roundhouse.

Also on the bill, as the first batch of names was released today, are Primal Scream, Thirty Seconds To Mars and Jake Bugg.

Fans can apply for tickets at itunes.com/festival and the performances are also being streamed online.