I don't think you need to apologise for that, Nick. Beautiful.Sorry about this.
Not having done one of these for a while, I thought I'd have a bash at this since it's a bit different.
I don't think I knew the tune though I'd be amazed if I hadn't heard it somewhere or other. So I played through it and recorded it. Didn't like it so I tried again. Got halfway through, got bored and stopped.
Not feeling inclined to try again I decided to stick the first attempt up here. Enjoy. It sort of falls apart near the end.