Thirty Seconds to Mars is set to take the stage at the 2013 iTunes Festival at the Roundhouse arts center in London on Sept. 18. The Family Rain is slated as the opening act.

On the offical iTunes Festival Twitter account, fans can chat with Jared Leto and the band: "We chat with @30SECONDSTOMARS on 9/18 at 5:30pm UK/12:30pm ET. Send questions using #AskMARS." Check it out, here.

Fans can watch all the show's highlights live and online.

Watch the iTunes Festival Live Stream.

Fans can watch on a computer at the iTunes store, Apple TV users can watch in HD from the main page or can download the iTunes Festival app to an phone or iPad.

The festival kicked off on Sept. 1 with Lady Gaga. Closing the festival is Katy Perry. Huge music stars like Justin Timberlake, Jessie J, The Pixies, and Robin Thicke, are still set to take the stage later this month.

Each headlining act is scheduled to perform at 9:00 p.m. London time, which translates to 4 p.m. EST.

Many acts can be viewed for a limited time after the concert, and iTunes will be selling some of the performances at the iTunes store.

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Itunes festival 2013, Jared leto