Is he right? Not entirely. Depends upon whether you're referring to Trad folk (finger in the ear, socks with sandels, tankard on belt etc) or contemporary acoustic (and otherwise) songs etc. I'm sure actually there are some trad songs in/with 'minor key's' (black notes) but it's early and i haven't had my breakfast yet, can't think of any off hand. Someone will, that's the nature of this site. Someone always knows. Enos(everything!)

sal