Gwyneth Paltrow's sad song

Jul 4, 2008, 4:00 GMT

05/19/2008 - Gwyneth Paltrow - 2008 Cannes Film Festival - "Two Lovers" Premiere - Arrivals - Palais des Festivals - Cannes, France © Pixplanete / PR Photos

Gwyneth Paltrow broke down in tears after husband Chris Martin sang 'Fix You' during a recent Coldplay concert.

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.

The onlooker added to America's OK! magazine: "He noticed she had been crying. He kissed her and made her laugh by pointing out all the things he had screwed up in the show."

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."