I know this is an old thread, but this may still be useful to someone...
I have begun playing a 30 key Morse Céilí, learning tunes from ABC notation. In order to keep track of particular fingering patterns in my note book, I started experimenting with a variety of tab notations. Wanting something that was easily scribed and interpreted, and could be just as easily typed as written by hand, I finally settled on the following:
The numbers 1-5 (predictably) number each button in a row from top to bottom. The first row is denoted by a full stop, second by a colon, third by an exclamation mark. If the punctuation is placed on the left side of the number, it shows left hand button and vice-versa for the right. Finally, an underline indicates a pull note, no underline is a push note.
Here are some examples:
.3 = left hand, first row, third button, push
4: = right hand, second row, fourth button, pull
!2 = left hand, third row, second button, push
Finally, I have made a chart that shows all the alternative fingerings for each note on the instrument, laid out on a piano keyboard diagram with ABC octaves indicated – It's attached as a PDF. If anyone is interested, I am happy to share the excel file that I used to make it so that it can be modified for alternative instruments / fingerings.
I hope this might be helpful to anyone starting out.
Concertina Fingering.pdf
