Q. How long can it take to write a song?
A. Too Bloody Long
This started life with a 'jazzier' chord sequence and totally different words in the verse. The chorus has remained unchanged but there have been three totally different verse structures.
The song was not origially completed because it felt like it should have had a middle which arrived, totally out of the blue, while driving in Leicester, several years after the song had been started. I stopped the car and scribbled down the words and then added the chords later that week. This was a lifetime after I had last looked at the song. My brain had solved the problem by itself with no conscious help from me. Very strange.
The chord structure was changed in 2010 along with the rhythm on another whim.