It was recently announced that Pharrell would be performing at the 2014 Oscars as his track 'Happy' is nominated for Best Original Song. It looks like Karen O will be performing as well, as she's also nominated for the award for 'The Moon Song', taken from Spike Jonze's film Her.

Other nominees for Best Original Song include U2 for 'Ordinary Love' in Mandela: Long Walk to Freedom and 'Let It Go' from the animated hit film Frozen by Kristen Anderson-Lopez/Robert Lopez. The show airs on Sunday, 2 March.

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