Hello friends concertinists! About "Bèla vièrgi coronada", it is really a 6/8 song. The first bar is an incomplete bar, that you call "pick up notes" in english ("anacrouse" in french). At the beginning of the 4th bar there's a crotchet rest, so it is a 6/8 bar indeed. Nothing bizarre in this piece, except the 11 bars, but it is an old song which was collected in countryside, during the 19th century, often sung by very old people, and transcribed by hand, using these pause signs and so on, you know... I would like to record these melodies but I do not have any possibility to do it at the moment. Perhaps a workshop specialized in this kind of tune could be organized, in France or in England one day. I tutored such a workshop a few years ago at Witney. Do not hesitate to ask me questions about this french repertoire.