"Do They Know It's Christmas?" became one of the most iconic superstar charity collaborations of all time when it topped the music charts in 1984. To celebrate the 30th anniversary of the song, original writer/producer Bob Geldof brought together music superstars of today; including One Direction, Bono, Chris Martin from Coldplay, Sam Smith, and more, to raise money to fight Ebola. Check out "Band Aid 30" below: