The film ends with '(I Want To) Come Home' starting up before the final credits and providing the perfect backdrop to a film that explores many different areas of family life and relationships. 'Everybody's Fine', which opens in the UK on 26th February, is about a widower (De Niro) embarking on a road trip to catch up with his grown up children and their lives in order to complete one simple mission - to get his family all together round the same table for Christmas. His kids are forever telling him that they are all fine, but he soon discovers it's not quite the case.

Talking about relating to the film Paul said, "I could definitely identify with Robert De Niro's character because I have grown-up kids who have their own families." The track opens with just Paul at the piano, intimately singing lyrics that fit De Niro's character; 'For so long I was out in the cold and I taught myself to believe every story I told', before he's joined by strings and the track starts to build. Paul collaborated on the orchestrations with composer Dario Marianelli and the results are spectacular.

Talking about the writing process Paul explained, "When I saw the film originally, I was just watching and enjoying it, when at the end I found that the director had, unbeknown to me, put in the place where he wanted the new song another song of mine: 'Let It Be' sung by Aretha Franklin. I kind of left the theatre thinking well, I can't write another 'Let It Be' and I can't sing like Aretha much as I want to, so I might have to pass. But that evening, I came back from dinner and started doodling with some chords and I had an idea and it all grew from there."

'(I Want To) Come Home' has already become a firm favourite at Paul's live shows. It was given its debut live outing on his recent December sell out 'Good Evening Europe' tour where it sat perfectly at home in the set-list in-between other McCartney penned piano classics 'The Long And Winding Road' and 'My Love'. Paul's recent tour ended on the 22nd of December when he played his one and only UK show of the year at London's o2 Arena, which is already being talked about as THE show of 2009.