Irem ember harry boardman po laying and singing cob coaling on his anglo sounded like he was playing straight uop and down the rows. heres peter bellamy playing straight up and down the rows,this can be played on a 20 key.https://www.youtube.com/watch?v=NhQMsONIwng
the answer is YES., as ilustrated above
Brian, you could at least have the grace to admit that Steve Dickinson, has made it clear why the concertinas were constructed as they were and that his explanation regarding acoustics, has nothing to do with snobbery.