Karen O Celebrated 'Her' Oscar Nom With A Karaoke Party

'The Moon Song' will compete for a shiny gold trophy on March 2nd.

When Karen O woke up on Thursday (January 16), she did not expect to be an Oscar nominated artist.

"Holy SMOKES. I had zero clue!" the songwriter gushed of her best original song nomination, for "Her's" "The Moon Song." "To say this was unexpected is an understatement."

Karen O, born Karen Lee Orzolek, first called director Spike Jonze and her parents as the news sunk in, before celebrating the moment with a little karaoke celebration.

"I put on Nina Simone's cover of 'I Shall Be Released' and sang along," she said. "It's such a soulful, uplifting rendition and always makes me feel so good."

The Yeah Yeah Yeahs frontwoman revealed that "The Moon Song," performed on-screen by Joaquin Phoenix and Scarlett Johansson, was written in "the most humble of circumstances; at my dining room table, a few paces away from the couch where I read the script for 'Her' for the first time.

"The song was 10 years in the making according to Spike and testament to a beautiful friendship and creative chemistry we've shared over the years," she said. "I hope everyone and their sister, mother, father and uncle goes out to see Spike's inspired, heartfelt film."

Whether Karen O gets to stand up on that stage March 2nd and offer a slew of "Thank Yous," she's getting one of them out of the way early.

"Thanks Spike for making my very real phobia of ever having to be in a position to give an acceptance speech at a major award show a reality," she joked.