Apple adds 21 acts to iTunes Festival card including Lenny Kravitz, The Script and more

Apple on Tuesday announced the addition of 21 artists to its upcoming iTunes Festival in London, with Lenny Kravitz, The Script, Foxes and more set to take the stage next month.

With the new additions, a total of 35 performers have been announced for the concert series, which is slated to kick off on Sept. 1 at the Roundhouse Theater in London. Apple has yet to reveal the full lineup, however, and is apparently waiting until the last minute to announce opening and closing acts.

As noted in a new lineup posted to the festival's website, Lenny Kravitz, The Script, Foxes, David Gray, Jenny Lewis, Clean Bandit, Robin Schulz, Charlie Simpson, Luke Sital-Singh, SOHN, Matthew Koma, Elbow, Paolo Nutini, Gregory Porter, Eric Whitacre, Jessie Ware, Rudimental, Jess Glyne, Ryan Adams, First Aid Kit and MNEK are now expected to perform.

Apple first announced the 2014 iTunes Festival in July, highlighting headliners Maroon 5, Pharrell Williams, Beck, Sam Smith, Blondie, Kylie Minogue, David Guetta, 5 Seconds of Summer, Calvin Harris and more. The annual concert runs for 30 days and will feature more than 60 performers.

As in years past, tickets are not available for purchase and will instead be meted out to winners of contests from local media in Australia, Brazil, Canada, Europe, Japan, Mexico and the U.S. Last year, fans in the UK were able to seek passes from the official iTunes Festival app (currently only available in the UK), iTunes Store and local radio stations.

Apple will again stream live shows and replays to iOS devices through the app, desktop versions of iTunes and Apple TV. When the company brought the festival to the U.S. for the first time this March at the SXSW conference, fans were able to watch performances live through the Vevo Apple TV channel.

In July, Apple reactivated the @itunesfestival Twitter account and Facebook page to pass along announcements and scheduling updates.