Sir Paul McCartney's children re-recorded classic Beatles hit "When I'm 64" as a birthday surprise for their dad.
Stella and Mary - Paul's daughters - organized a trip to the world-famous Abbey Road studios for the family to record a new version of the track for Paul's 64th birthday.
The legendary musician has recently been left reeling by allegations his estranged wife Heather Mills worked as a high-class prostitute and posed for a sex book, and his family were desperate to cheer him up.
A source said, "Stella and Mary knew exactly how down in the dumps their dad had been feeling. They were determined to put a smile back on his face for his birthday."
Paul's son James and adopted daughter Heather were also present.
Stella's 16-month-old son Miller, and Mary's sons also visited studio two - where the original version was recorded - last Monday .
Giles Martin, son of the Beatles' producer Sir George Martin, helped to rewrite the lyrics.
The family played the new version to Paul yesterday as they gathered at his East Sussex mansion for a birthday vegetarian barbecue.
The musician shelved plans for a star-studded party following the shocking revelations about Heather.
A source said, "He could not face a big party with so much turmoil in his life."
Meanwhile, Paul got a surprise birthday phone call from Heather yesterday.
The former model also dropped their two-year-old daughter, Beatrice, off at the party and handed over a birthday present.