Chris Martin claims Angelina Jolie had him kidnapped and forced him to write a song for 'Unbroken'.

Asked how the project came about, he said: "I got a message that said, 'Meet in this undisclosed location. You'll be blindfolded and picked up by seven ex-Navy SEALs.'

"So they kidnapped me, hit me over the head, and sprayed me with Mace. When I woke up, I was in an office, and Brad Pitt was doing push-ups as Angelina Jolie was just sitting there with her crown on.

"There was also a guy holding a knife to my throat, and she said, 'Write me a song, or else.' And Brad Pitt said, 'Yeah. What she said.' "

However, after the tough introduction, Chris went on to claim he and his bandmates weren't even guaranteed a place on the soundtrack, joking they then had to pass reality show-style eliminations.

He added to Vulture: "We wrote a song and then she said, 'It's through to the final eight,' and then we had live eliminations at her house.

"We came in second, but the main guy chickened out."