Unexplained non-chord tone · Rules
A note of the given voice that is not in the chord must be a recognizable non-chord tone: passing tone, neighbor tone, échappée, anticipation, appoggiatura, suspension, incomplete neighbor or near tone. If not, it has to be harmonized.
- Unexplained non-chord tone: A note of the given voice that is not in the chord must be a recognizable non-chord tone: passing tone, neighbor tone, échappée, anticipation, appoggiatura, suspension, incomplete neighbor or near tone. If not, it has to be harmonized. (Piston, ch. 8, pp. 110–123)