Most songs have a basically simple chord structure. Especially things like folk/trad/whatever. If you know the key, you can almost predict what chord is going to be used next. I'm pretty good at figuring out chords by ear, so it comes easy to me, I suppose. I hardly ever bother with music theory when it comes to getting chords right. And Marion, I figure out the chords for "Solid Ground" by Dougie for you, but I've never heard the song before. If you have it on CD, could you perhaps tape the song and send it to me? I could figure out the chords from that for you.