BookatlasPiano Rabbit Hole: Improvisation Theory & Practice
8647 / 18210 · Workshop 70 — From Lead Sheet to Full Solo-Piano Arrangement: Melody First, Bass Second, Inner Voices Third, Chord Symbols Last← prev⊞ allnext →

70.20Level 8 — add second guide-tone line

If needed, add another middle voice.

For ii–V–I:

C → B → B

C → B → B

or another smooth path.

Now the structure is:

melody

inner voice 1

inner voice 2

bass.

This is effectively four-part writing.