Keyboard 1: Tab 1 Q 2 W 3 E 4 R 5 T 6 Y 7 U 8 I 9 O 0 P - [ = ] \
Keyboard 2: Z S X D C F V G B H N J M K , L . ; /
White keys are fixed: QWERTYUIOP[]\ and ZXCVBNM,./.
Roots are chosen from those whites. White rows follow Ionian; black keys show only non-scale accidentals (no duplicates of white notes).