So with B/C melodeon the same buttons are generally used for 95% of Irish music, is it the same with concertina as well? I know the concertina has a few notes that are the same but with different buttons, but do Irish players usually stick to certain buttons more than others or does it depend on the tune? Could someone tell me which buttons are mostly used, I assume its the ones in the D and G scales?
Also does the concertina have patterns like the melodeon does, like the way the b/c has three on the pull and three in a triangle shape on the push and that's basically all the buttons you need? This video shows what I am talking about.
Hopefully this jumble of words makes sense.