Today (December 5) marks 15 years since Band Aid 20 went to number one with the third incarnation of 'Do They Know It's Christmas?'. But if, like us, you were trying to work out who sang which line, don't worry - help is … Which star sings each line on the charity single has remained a closely guarded secret, so as Band Aid 30 is unveiled on X … Rolling Stones' photographer on how he captured the band's most candid shots. Try our quiz below to find out: QUIZ: Can you recognise these kitchen cupboard essentials, QUIZ: This quiz is designed for 10 year olds – can you, The incredible way Billy Joel looks after his loyal fans, Bee Gees: Excruciating moment trio walked off Clive, Anderson TV show after host's music jibes, David Bowie's moving 'Imagine' cover, in tribute to John, When George Michael and Pavarotti sang a spine-tingling, duet of 'Don't Let The Sun Go Down On Me', Paloma Faith announces joy of second pregnancy after six, Princess Eugenie announces she is pregnant with her first. 6am - 10am, What A Wonderful World Fran Healy & Justin Hawkins: And the Christmas bells that ring there are the clanging chimes of doom, Bono: Well tonight thank God it's them instead of you, Will Young & Jamelia: And there won't be snow in Africa this Christmas time/The greatest gift they'll get this year is life Justin Hawkins (Darkness): Raise a glass for everyone But can you remember which famous '80s hero sang each line in the original 1984 version? Have you heard Band Aid 20? Joss Stone & Justin Hawkins: Do they know it's Christmas time at all? Here's our list of singers and their lyrics: Chris Martin: It's Christmas time, there's no need to be afraid/At Christmas time, we let in light and we banish shade, Dido: And in our world of plenty we can spread a smile of joy/Throw your arms around the world at Christmas time, Robbie Williams: But say a prayer, pray for the other ones/At Christmas time it's hard, but when you're having fun, Sugababes: There's a world outside your window/And it's a world of dread and fear, Fran Healy: Where the only water flowing Everyone: Feed the world/Let them know it's Christmas time again, Fran Healy: Woooo One Direction , Ed Sheeran, Olly Murs and loads of other popstars have come together to make Band Aid … You don't get more iconic than Band Aid's 'Do They Know It's Christmas?'. Which star sings each line on the charity single has remained a closely guarded secret, so as Band Aid 30 is unveiled on X Factor we look at who was finally given the honour of the opening line, It’s Christmas time – there’s no need to be afraid - One Direction, pictured Harry Styles Picture: Goff, At Christmas time – we let in light and we banish shade - Ed Sheeran Picture: Rex, And in our world of plenty we can spread our smile of joy - Rita Ora Picture: Andrew Cowie/AFP, Feel your arms around the world at Christmas time - Sam Smith Picture: Xposurephotos.com, But say a prayer and pray for the other ones - Paloma Faith Picture: Getty Images, At Christmas time it's hard but while you’re having fun - Emeli Sandé Picture: Getty Images, There’s a world outside your window and it’s a world of dread and fear - Elbow, pictured lead singer Guy Garvey Picture: Andrew Cowie/AFP, Where a kiss of love can kill you - Dan from Bastille Picture: Anthony Devlin/PA, Where there’s death in every tear - Angelique Kidjo Picture: Rex, And the Christmas bells that ring there are the clanging chimes of doom - Chris Martin Picture: PA, Well tonight we’re reaching out and touching you - Bono Picture: Andrew Cowie/AFP, Bring peace and joy this Christmas to West Africa - Seal Picture: John Phillips/Getty Images, A song of hope where there’s no hope tonight (ooh) - Ellie Goulding Picture: Getty Images, Why is comfort to be feared, why is to touch to be scared - Sinead O’Connor Picture: Rex, How can they know it’s Christmas time at all - Bono Picture: John Phillips/Getty Images, Here’s to you - One Direction (pictured Zayn Malik) Picture: Getty Images, Raise a glass to everyone - Olly Murs Picture: PA, Here’s to them - Bastille (pictured WIlliam, centre) Picture: PA, And all there is to come - Sam Smith Picture: REDFERNS/GETTY IMAGES, Can they know it’s Christmas time at all - Rita Ora Picture: Anthony Devlin/PA, Chorus - all singers Feed the world let them know it’s Christmas time again Feel the world let them know it’s Christmas time again Heal the world let them know it’s Christmas time again Feed the world let them know it’s Christmas time again Feel the world let them know it’s Christmas time again Heal the world let them know it’s Christmas time again Feed the world let them know it’s Christmas time again Feel the world let them know it’s Christmas time again Top Row L-R: Kyle Simmons (Bastille), William Farquarson (Bastille), Guy Garvey (Elbow), Chris 'Woody' Wood (Bastille), Chris Martin, Dan Smith (Bastille), Seal, Sir Bob Geldof, Karl Hyde (Underworld), Roger Taylor, Joe Suggs (Thatcher Joe Youtube), Alfie Deyes (Youtube), Milan Neil Amin-Smith (Clean Bandit) and Grace Chatto (Clean Bandit) Second Row L-R Louis Tomlinson, Zayn Malik, Liam Payne, Niall Horan, Harry Styles, Olly Murs, Sinead O'Connor, Ellie Goulding, Jessie Ware, Ed Sheeran, Zoella (Youtube), Angelique Kidjo, Emeli Sande, Paloma Faith.Front Row crouching L-R Midge Ure, Bono Picture: BAND AID TRUST / BRIAN ARIS / CAMERA PRESS, Trump's ban on diversity training is commendable – we should follow suit, 'Talent is worthless unless you work harder than everybody else' - How Danny Mills is inspiring his son George to athletics success, How Mikel Arteta helped Arsenal compete with Liverpool after years of torment.