Here's the tab and the mp3 of a break for Clinch Mountain Backstep in A (open G tuning) for bluegrass banjo. I used G modal chord, a Dm chord, and a A# (Bb) chord in the song as per the tab. Lot's of pickers put them in, some don't. I like the chords the way they're written here.
I'll check in now and then if you have any questions.
Doug Knecht