Three decades after Band Aid was recorded, some original singers have joined forces with newer talent to record an updated version of the groundbreaking charity single, 'Do They Know It's Christmas?'.
Bob Geldof and Midge Ure organised the anniversary event in the hope of raising money to fight Ebola in West Africa - and singer Olly Murs was honoured to be selected as one of the artists to take part.
X Factor star Olly smiled and waved at fans as he arrived at Sarm Studios in Notting Hill, London.
'Thinking Out Loud' star Ed Sheeran also signed autographs and posed for pictures as he made his way into the recording studio to join the other members of the supergroup.
The single is being recorded in one day (Saturday 15 November) and will include new lyrics to highlight the changing times.
A pink-haired Rita Ora, wearing a striking red suit and white crop top, recorded her lyrics before rushing off again to film The Voice.
After leaving the studios, she wrote: "Band aid 30. Support the cause. Thank you sir bob! It's out tomorrow everybody do your part! Now off to the voice! #TeamRITA #chopper."
Ellie Goulding, Jessie Ware, Sam Smith, Coldplay's Chris Martin, U2's Bono, Seal, Sinead O'Connor, Emeli Sande, Paloma Faith and Elbow's Guy Garvey also took part.
The single is currently the bookies favourite to be Christmas number one.
It will have its world premiere during The X Factor results show on Sunday (16 November).
The single will then be available to download at 8am on November 17 for 99p. A £4 CD will be released three weeks later.
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Watch the teaser for Band Aid 30 below:
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