Hildur Guðnadóttir wins Oscar for Joker

All the Oscar-winning film scores from the last 50 years

Oscars 2015

Oscars 2015 ceremony: Alexandre Desplat, Eddie Redmayne, Julianne Moore and many more

Reese Witherspoon takes a selfie

Oscars 2015 red carpet pictures: Eddie Redmayne, Rosamund Pike, Hans Zimmer and a galaxy of stars

Ellen DeGeneres at the Oscars 2014 on stage

Oscars 2014: winners and the ceremony

Brad Pitt and Angelina Jolie at the Oscars 2014

Oscars 2014: Red Carpet Pictures