Hello Chris,
I guess you will have received a copy of the dots from John North. He also kindly sent me a copy which was a lovely surprise and I will have a go at playing it tomorrow.
Meanwhile, like you, I envy 'ear players' and to "rub salt in the wound" I have two brothers and a daughter who all play by ear. My daughter in particular, is very good at it, she hears a new tune and goes to the piano and can play it straight away. She uses what Peter Hayward calls "the magic notes" meaning she uses black notes only, which is why most people can sing to her music.
If it's any consolation, a senior friend who is also an 'ear player' said he now envies me because whilst playing, his mind often wanders or goes completely blank and he cannot remember where to go next, whereas of course, we have the advantage of reading the dots.
It is an interesting subject though, as no one seems able to explain why some people have this gift ans others don't. I guess we'll never know the answer.
Have fun playing your tune.
Audrey