A Sky News interview with Sir Bob Geldof about criticism of the new Band Aid single was prematurely halted after the musician swore twice, live on air. It was put to the Boomtown Rats frontman that if all of the wealthy musicians taking part in the single had paid their taxes properly, there would be no need for a charity song.

Bob GeldofSir Bob Geldof at the recording of the Band Aid track last week

"There's a lot of people who say there's a lot of wealthy people in that room. If they all pay their taxes in the right way we wouldn't need these fundraisers singles - what would you say to that?" Geldof was asked.

Reacting angrily, he called the claims "bulls*it", leaving interviewer Jayne Secker to request that he didn't use "colourful language" - a request he ignored.

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The second outburst came after Secker read out an extract from an Observer interview with Ian Birrell, a former deputy editor of The Independent who has criticised the latest song. "This trite song will raise a comparative pittance, ignores Africans and has a logo implying the virus struck the entire continent. Patronising and perpetuating myths again. Band Aid should have learned its lessons and stayed silent," he said.

The Band Aid 30 Ebola charity single - a new edition of 'Do They Know It's Christmas' - features Ed Sheeran, One Direction, Rita Ora, Clean Bandit, Sinead O'Connor, Seal, Sam Smith, Roger Taylor, Jessie Ware, Olly Murs, Chris Martin, Bono, Bastille, Elbow, Paloma Faith and Angelique Kidjo.

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According to Geldof, the track raised more than £1 million "within four or five minutes", though it's faced criticism from musicians, too.

"Our perspective and our idea of what helps and our idea what's wrong and right are not necessarily shared by other cultures," Blur frontman Damon Albarn told Channel 4 News.

"There are problems with our idea of charity, especially these things that suddenly balloon out of nothing and then create a media frenzy where some of that essential communication is lost and it starts to feel like it's a process where if you give money you solve the problem, and really sometimes giving money creates another problem."

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