Robbie Williams, Taylor Swift, Will.i.am, Jessie J, PSY, Union J, Olly Murs, The Wanted, Lawson and more! See the amazing high definition pictures of the Summertime Ball 2013's line-up.
Nathan Sykes On Returning To The Wanted At Summertime Ball 2013: "It Was Surreal!" - Audio
The 'Walks Like Rihanna' singer says he had conflicting emotions before surprising fans at the Ball.
The Wanted's Nathan Sykes says making his return to the band live at the Capital FM Summertime Ball 2013 was "the most surreal experience" and admits he had a lot of conflicting emotions as he made his way on stage.
The 'Walks Like Rihanna' star emerged as a surprise halfway through the UK band's set, to perform his signature middle eight part from The Wanted's single 'I Found You' , and says it feels "incredible" to be back with his bandmates.
"I had to stop myself from getting very emotional on stage," Nathan exclusively revealed to Capital FM after the show. "Honestly, I keep on saying it, it was the most surreal experience just before I came up, because I went through about seven different emotions simultaneously.
"It was very, very peculiar, I've never experienced anything like it," he added. "It was incredible."
Check out a picture of Nathan Sykes making his return below (Credit: Derek Bremner):
The UK singer later took to Twitter to thank all his fans for supporting him over a "tough couple months", after undergoing throat surgery earlier this year to repair a vocal cord injury.
The Wanted were just one of the many huge names who performed at this year's Summertime Ball, including Jessie J, Lawson, Taylor Swift and Robbie Williams.
Listen to Nathan Sykes chatting to Capital FM showbiz reporter Kevin Hughes about his return below:
Keep it Capital as we recap all the action from Wembley Stadium in our Summertime Ball area.
Tune into Capital TV, on Sky channel 388 and Freesat 517, tonight (10th June) from 7pm for all the best bits from the Summertime Ball