Jay-Z and Beyonce To Duet at Festival?

Jay-Z and Beyonce have fueled speculation they're gearing up for a duet at a summer festival.

The newly weds are rumored to be appearing on stage together at the O2 Wireless Festival in London, just one week after the '99 Problems' rapper controversially headlines Glastonbury.

A source reveals, "Jay-Z is planning a spectacle to end of spectacles

"He knows all eyes will be on him when he headlines Glastonbury but he's actually planning on whipping up something special for Wireless too.

"He's been talking to Beyonce about getting her on stage."

Jay-Z, real name Shawn Corey Carter, is also planning to fly in a huge string section and orchestra for the gig at London's Hyde Park.