Brit/Irish tunes and North American variants
An English pub session friend wrote: “There must have been studies done on similarity of tunes that ‘crossed the water’…..you know the kind of thing, Irish A part, Appalachian B part because they’d forgotten the Irish B part etc. etc. are you aware of anything published on the subject?”
I suppose Samuel Bayard and Bertrand Bronson must have dealt with this somewhat (under the “tune family” concept), but I haven’t read their stuff for 30 years (and even then mostly to support my research on Japanese folk song). Can anyone suggest good readings for my friend?