white keys — three letter rows, low → high registers:
Z X C V B N M , (low) · A S D F G H J K L (middle) · Q W E R T Y U I O P (upper highs)
black keys — number row 1 2 3 4 5 6 7 8 9 0 − =, mapped to your sequence
5 4 3 2 8 6 9 7 4 2 7 8 (scale-degree picks)
each key shows its
scale-degree number + output note.
downloads:
VST3 ·
JSFX (REAPER)