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26 September 2014, 15:08 | Updated: 29 September 2014, 16:27
The Beatles icon is the latest act confirmed to record vocals on a cover of A Great Big World's 'Say Something'
Paul McCartney has joined a host of musicians and celebrities featuring on a Christmas single in aid of Hollywood actor Samuel L. Jackson's cancer charity, One For The Boys.
Earlier this week the stars reportedly took part in the recording session at Abbey Road Studios, making McCartney's involvement all the more poignant.
The group of iconic singers and actors, rumoured to include Jennifer Hudson, Game Of Thrones actress Maisie Williams and Samuel himself, have covered A Great Big World's 'Say Something' which is set for release during the festive period.
With Paul now playing a part, the track will no doubt join the battle for the title of Christmas number.
To hear the original, watch the video below...