1.14.2
- **Hold keys:** played notes stay in their actual registers.
- **Follow register:** the entire held voicing moves in octaves with your sung register. It preserves its chord pitch classes and inversion. Hysteresis prevents repeated octave changes near the register boundary.
- **Move in parallel:** the entire held voicing moves by the singer's melodic semitones. The inversion and spacing remain; the chord transposes with the melody.