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16 January 2014, 12:48
Check out the emotional promo to the team-up from the US stars.
Christina Aguilera has teamed up with A Great Big World for the new emotional track 'Say Something'.
The song is featured on the album 'Is There Anybody Out There' – the debut record from the indie/pop duo.
In the video, the all-star trio perform the ballad with heart-breaking stories of people playing out.
There's a child whose parents keep fighting, a young couple lying coldly by one another's side and an elderly man saying a final goodbye to his wife.
The track is released on 16th February.