The gathering, which attracted an estimated 13,000 people, included a guest appearance from popstar Pink and a mass sing-along to hits including The Beatles' Hey Jude and Britney Spears' Baby One More Time.
Yesterday, , which attracted more than 11 million views on YouTube. The new advert, produced by advertising agency Saatchi and Saatchi, will air during ITV1's Britain's Got Talent this Saturday.
"With ‘Sing-along', we wanted to generate a real feeling of anticipation and create a truly unique, memorable moment that everyone would want to share in," said Paul Silburn, creative director at Saatchi & Saatchi London.
"This event gave thousands of people the opportunity to experience first-hand what the ‘Life's for Sharing' campaign is all about."
Event can also confirm that an Iconic 100 screen, the world's largest mobile LED screen, appeared at the event, supplied by ADI.
"For such a huge event, it's only fitting that T-Mobile chose the best and biggest screen available," said Harj Virdee, business development manager at ADI.
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