Dick / Schweik:

I have no argument with Steve Dickinson, an excellent builder, but then he's never told me that another manufacturer's concertina is NOTHING BUT A GLORIFIED ACCORDION.

Harry Boardman was a good friend who I heard perform every Saturday night for several years. I loved and respected his music, but concertina song accompaniments were not his strongest suit.

I've already explained that Peter Bellamy played up and down the rows, and why he couldn't have done what he did on 20 buttons.

Now please stop digging, and misleading the OP.