Listening to the Patrick Street version. Seems they've a diminished chord after the F/C section in part B. Resolves to an A, yes? The accompanying(?) guitar is in Dropped D tuning, that much is clear. Sorry, suddenly I'm able to focus in on the melody guitar and realized I was making it tons more difficult than it actually is. Thanks again for all your input, I'll post a finished version, maybe. It's comprised of mostly hammer-ons and pull-offs back and forth between the A-D-G strings. The rhythm guitar is f**king brilliant! I'm a pretty fair bluegrass/celtic guitar player, but this guy(whoever he/she is)makes me feel like an idiot. I'm determined to get that 'snap' effect he/she gets on the strum. Reminds me of trying to figure out Doc Watson's 'Black Mountain Rag' note for note years ago. The only thing is you can's slow the cd down like you could the vinyl!