Something we haven't really touched on so far is just how limited an audience there is (as in, little or none) for exclusively traditional songs, at least in Britain. I used to go to folk clubs where I'd hear a lot of Dylan, Hank Williams and Richard Thompson, a lot of new songs in the style of Dylan, Hank Williams and Richard Thompson, and a few traditional songs, mostly Irish rather than English. As I've got more into traditional songs myself I've gravitated towards singarounds, often with people who have been singing traditional songs for 30 years or more. No Dylan, no Hank and very little Richard Thompson - but I do hear a lot of MacColl, Tawney and Rosselson, not to mention new songs in the style of MacColl, Tawney and Rosselson. The proportion of traditional song is much higher: in the folk clubs I know the split is something like 10/50/40 trad/contemporary/new, vs 50/40/10 in the singarounds I go to. But the all-traditional (or even 90% traditional) singaround is a myth, sadly perhaps.