I guess that many of us have had a go at singing harmonies for folk songs. In my own case I can usually knock a harmony line up by ear. Sometimes they're OK, sometimes they're not!The DT's current storage concentrates on the lyrics, with a simple melody line in (say) half of them. Without wishing to diminish the outstanding efforts to date, I feel that we're missing out on recording part of the real joy of the music we love so much.
I could write more, but would prefer to hear from others so that we collectively could advance this desire.
Regards John