Dick, am I correct in assuming that "reverse the bellows" means go from squeezing to drawing and vice-versa? And, not being a concertina player myself, I assume that the English concertina has double reeds, i.e., each button produces only one tone, whether squeezing or drawing, unlike an Anglo which is like a harmonica where each hole (button, on the 'tina) produces two notes, one squeezing and one drawing.

Charles