The iTunes Festival will welcome Justin Timerberlake to the stage today, Sept. 29 -- and without going across the pond, fans can watch the concert online for free through live streaming video.

Watch the iTunes Festival Live Stream.

The day before the gig, Timberlake tweeted, "Who's excited for #iTunesFestival tomorrow in London?! #The2020Experience #2of2." The singer will likely sing many new tracks off his upcoming album, which releases on Sept. 30.

The 2013 iTunes Festival will end with Katy Perry closing out the festival on Sept. 30.

Each headlining act is scheduled to perform at 9:00 p.m. London time, which translates to 4/3c.

The festival kicked off on Sept. 1 with Lady Gaga. This month huge music stars like Elton John, The Pixies, Kings of Leon, Queens of the Stone Age and Robin Thicke took the stage.

You can watch on your computer at the iTunes store, Apple TV users can watch in HD from the main page or you can download the iTunes Festival app to your phone or iPad. If you miss it, many acts can be viewed for a limited time after the concert, and of course, iTunes will be selling some of the performances at the iTunes store.