Thanks, everyone. You're all far too kind.

Lesson to self: NEVER mix at 10 o'clock in the night. David Cuny is spot on ... there were too many errors, and ALL of them in the solo guitar part ... so I've removed that, and changed the mix around a little, to give the piano more prominence. If you have time to give it a second listen, see what you think now? Thanks - really sorry about this!