PAUL McCartney was hurt after tumbling 5ft down an open trapdoor during a sell-out concert.

The ex-Beatle, 63, was walking across the stage when he mis-stepped and fell through the opening from which a grand piano was about to appear.

Macca banged his elbow and back as he fell on top of the piano. He was helped to his feet by stage crew at the St Pete Times Forum, Tampa, Florida.

When he performed he told the 18,000 crowd: "There's a big hole in the stage and I just fell into it. A word to the stage crew, I want a big fence around here tomorrow.

"Think we ought to put a picket fence around it? A little picket fence! It will look nice."