The Oscar-winning actress became very emotional when the song -- which Chris wrote for Gwyneth following her father's death in 2002 -- was played and couldn't stop crying.

An onlooker at the New York show said: "Gwyneth was whispering and clapping throughout the show. But when 'Fix You' started, she broke down in tears." The lyrics in the ballad - which include "Tears stream down your face, when you lose something you cannot replace" - are about Gwyneth and the loss she felt.

After the show, mother-of-two Gwyneth was comforted by Chris, who tried to cheer her up.

Chris has previously revealed his wife inspires his song writing, saying: "Everything in my life comes up.

"Gwyneth's in there. My friends are in there. The way I see the world is in there. The lyrics come out and I just - I try not to get in their way."