Here is a link to an automated Excel spreadsheet I made. This helps the Anglo concertina players to play chords on their instrument. It shows the chord constitution and where to play it on the keyboard. There are two sheets in the document, one for a vertical representation of the keyboard and one for a horizontal representation.
I hope this can help some of you.
Edited by Djack, 11 November 2014 - 08:33 AM.