Beyonce persuaded by Coldplay to play Glastonbury

Coldplay singer Chris Martin helped convince Beyonce Knowles to appear at Glastonbury.

The 'Run the World (Girls)' singer was apprehensive about signing up for the festival - one of the Europe's biggest - after her husband, Jay-Z's, inclusion on the 2008 bill proved controversial, but Chris helped talk her round, according to co-organiser Emily Eavis.