Concertina bellows dynamics: push and pull balance
Like the greatest concertina players (and he’s really one of the best ever!), Micheál doesn’t completely open or close the bellows, expecially when he plays fast tunes, like this one:
Let’s halve the speed through the youtube settings and consider the first 2 seconds of the video: how can he balance the pulling/pushing in the 2DFD ADFD beginning part of Tossing the Feathers,? Does he alternate the push D and pull D or what?
I really don’t undestand the deepest secret of it…