you clearly know nothing about singing and accompanying.

Thanks for that, Captain - once again, the Folk Orthodoxy reveals the blackness of its inner heart! But in those few actual Traditional instances where Folk Song was accompanied (I'm actually with WAV on this one, with significant reservations) I might listen to the oppositions and random voicings of Davie Stewart's playing & singing and ponder the dynamics of voice and instrument and conclude that the two are heterphonically conjoined as a single entity, which is the approach I, clearly knowing nothing about singing and accompanying, tend to take to such things.