Thanks everyone for your comments.
-> MarioD
The reason I thought of making changes was that I thought the main lead sounded too hard and brittle. I was thinking of substituting an instrument a bit smoother. I discounted the idea of adding a bass line as soon as the idea occurred to me, as with the other instruments, and the folksy nature of the tune it just would not fit!
->offthewall
I hope I'm not giving you too much work
It would be nice to hear this with real instruments.
->ForthMansions
I sweated for many hours over that guitar part. I'm glad it was worth it!