I play Bb trumpet. I don't know how this app is coded but isn't it possible just to disallow D# major 7 and replace it with Eb? I don't think it occurs in any key. I don't think that I've seen G# major7 not sure but if it does occur then perhaps it could be disallowed and default to Ab as well.
Hi
First, thak you and congratulations on this app! It is great and I'm turning my students on to it.
Regarding transpositions; Perhaps some kind of 'unlocking' would work. I'm not a coder so this may not make any sense. It is the sharps that seem to be the problem for Bb instruments (I...