Young Voices, the world's largest school choir concert organiser, is marking its 15th anniversary by inviting Britain's Got Talent star Connie Talbot to help set a Guinness World Record on March 6.

8000 UK school children will join Talbot on stage at London's O2 Arena, to become the largest number of backing singers ever to accompany one lead vocalist at a public venue. Alexandra Burke and Beverley Knight are also set to perform.