OK right hand for the D row on a DG I can find but what notes sound on the left hand on each key. I have done a search and can only find Hobgoblin as a (un)help (eg D/G & C#/D), but the plusses mean nothing and I am not sure which notes constitute the chords on each button anyway.

If I can nail the (say) D only, the rest should follow as a natural transposition - or am I deluding myself?

I don't read the dots but understand the mathematics, all I need is each note per button in one key.

I want to investigate an idea I have and need to see if it is feasable. Before I learn (if ever).

Any ideas? Websites that explain?