Led Zeppelin to air new song at reunion show

Led Zeppelin will air a previously unheard track at their upcoming reunion show at London's O2 Arena on December 10.

"There's one number that we rehearsed, I assume that it will make it to the Dome, that we never played at any point in time," guitarist Jimmy Page told Reuters. "It dates from when the band was together between 1968 and 1980. It's a really intense number."

In an interview in today's Mirror, Page said the band have been holding trial concerts in secret to check that they are still good enough to play together.

"We wanted to see how well we'd be playing," he told the paper. "Once we had played, it was without doubt we wanted to do it."