Well, I must be a complete charlatan since my "folk voice" derives from Frank Crumit, the Delmore Brothers, Jimmie Rodgers and Doc Watson! If I do sing the occasional English folk song, it's always in my own voice which veers between Scotland, Lancashire and Sussex - all of which I have lived in... I'm not a huge fan of the nasal "folk" accent.

I love singing the songs of 1920s and 1930s America and the words would really sound odd without some pretence at an American accent on my part. What I hate is an over-produced "American" twang on the part of non-American singers. There are, after all, a huge number of regional American accents. My attitude is to use the lightest American accent as possible and the gentle lilt of Doc Watson is a good guide as far as I'm concerned. Whether it works or not is up to the listener.