United Kingdom, June 27 -- Bob Geldof has praised his late ex-wife Paula Yates for being instrumental in Live Aid.

The Boomtown Rats frontman assembled a host of famous performers at the time for 1984's Band Aid charity single Do They Know It's Christmas?, which then led to the huge global concert series the following summer, but he admitted he wouldn't have been able to bring the line-up together without the help of his then-partner, who was co-host of music show The Tube.

Speaking in upcoming documentary Live Aid At 40: When Rock 'n' Roll Took On The World, Bob said: "All I had the power to do was write tunes. But the Boomtown Rats were not guaranteed to have hits any more. All these new guys had come along with beautiful suits and co...