Backstage with Cillian Murphy, Robert Downey Jr., and Christopher Nolan on 'Oppenheimer's big Oscars night.

The Oscar-winning composer reveals the lengths required to compose the score for 'Oppenheimer': "I had to go to some uncomfortable places to try to get the music out."

And the Oscar goes to...

This year's Best Original Score nominees include past winners like John Williams and Ludwig Göransson.

This year's nominees include Lady Gaga, Rihanna, and the history-making "Naatu Naatu."

The first-time Oscar nominee will take the stage to perform the nominated original song from 'Black Panther: Wakanda Forever.'