Looking at the German club system tutors here on Melnet I've got a question about the "correct" numbering system for the buttons.
The "1x1-Handharmonika.pdf" shows a 30-button model (23 melody and 7 helper). For the F and C rows, each line starts with a "0" and then numbers up to 10 and 11 respectively (that is, the last button on the F row is no. 10 and the last button on the C row is no. 11).
Is this a universal way of numbering the club system or do different players and teachers use different numbering schemas?
I've numbered my Hohner chart using the above model (albeit without the helper key numbering system used in "1x1-Handharmonika.pdf"), but am now wondering whether this is going to cause problems as I find and refer to other people's tabs for tunes.
What say you all?
Will