Yeah Yeah Yeahs leader Karen O put together the score for director Spike Jonze’s last movie, his 2009 adaptation of Where The Wild Things Are. Jonze is about to unveil his next film — Her, with Joaquin Phoenix as a man who falls in love with a computer — and Karen has written a song for it. It’s called “The Moon Song,” and in the movie, Phoenix and computer-voice Scarlett Johansson sing it as a duet. But Karen’s also recorded her own delicate, lovely version of the song, and you can hear it below.

Karen O – “The Moon Song”

Her is set to open 12/18, and it’s got a score from Arcade Fire. It looks great!