This may be a case of "imprinting": The first concertina videos I listened to on Youtube were of Soloduet on his Wicki Hayden concertina. That particular sound has embedded in my brain as the ideal. I realize that what I hear is partially a product of soloduet's wonderful performance strengths and of the microphones he uses, sound processing, etc. Still, I have to ask, what is that concertina make and specs? Thanks for any help you can provide.