The Yeah Yeah Yeahs' Karen O gave a breathtaking performance of 'The Moon Song' at the 2014 Oscars.

The short, stripped-down number, featured in 'Her,' was nominated for Best Original Song. Karen's weightless vocals filled the room as she was accompanied by Vampire Weekend's Ezra Koenig on guitar. The singer also looked absolutely radiant in a red dress!

Watch the beautiful, understated performance in the video above.