On the strength of his phenomenally successful debut, +, Ed Sheeran found his way into an elite group of singer-songwriters with seemingly unlimited crossover potential, along with friend and tourmate Taylor Swift. But this year's x showcases Sheeran's maturity as a songwriter with its hip-hop-inflected folk-pop. Recorded with super-producer Rick Rubin, the album is a luminous collection that establishes the Elton John protégé as one of the most exciting voices of his generation. Foy Vance supports. Doors open at 6pm; entry not guaranteed after 8pm. Tickets are limited. Tap below to get on the waiting list and we'll send you a notification 20 minutes before they become available – they go quick, so get ready and keep refreshing the app. Don't worry if you miss out; there may be more closer to the show. Please note! You need to update to the latest YPlan, which is required to enter the Roundhouse. iTunes performances can be watched live or on-demand by millions of iOS users around the world on their iPhone, iPad or iPod touch and iTunes on their computer or in stunning HD with Apple TV. Visit www.itunes.com/festival for more information. Join the conversation using #itunesfestival.