Left hand — which chord

1 finger

I

2 fingers

II

3 fingers

III

4 fingers

IV

5 fingers

V

Index + pinky

VI

Index + pinky + thumb

VII

Tilt your wrist inward for major, outward for minor.

Right hand — how it sounds

1 finger

Triad

2 fingers

1st inversion

3 fingers

Major / minor 7th

4 fingers

Dominant / diminished 7th

Height

Volume

Tilt

Filter

Thumb out

Octave down