James Blunt wrote this song for his father, Charles Blount, a former cavalry officer in the 13th/18th Royal Hussars, helicopter pilot and colonel in the Army Air Corps. His dad has stage four chronic kidney disease, and this minor-key piano ballad is a tear-stained tribute to his sick father.I'm not your son
You're not my father
We're just two grown men saying goodbye
No need to forgive
No need to forget
I know your mistakes and you know mine
Blunt explained to Apple Music
: "I idolized this man throughout my childhood, but as we grew older, I realized that he had his own fallibilities, and that's an awesome thing to see because you suddenly can become friends then. And then obviously as parents get older, the responsibility starts to weigh on the children that look after them. Although that can be painful, there's something beautiful about it, too."