Hallo, I'm new and play guitar and a little piano, and last week I had an opportunity to buy in action an anglo Bandmaster concertina 20 keys in pretty conditions. I'm very happy about that! I started to learn the musical notes on the keys but at the moment is easier to me to make some simple chords, so I tried to find something in web but my concertina is not a C/G but a D/A (external left key row is: D A D F# A) and I find nothing about this version.
Have someone a picture or a sheet about the chords in D/A?
Thanks so much.