Progressions in Ab — 4-Voice Polysynth

Ab major harmonizes to Ab – Bbm – Cm – Db – Eb – Fm – G°; G# minor to G#m – A#° – B – C#m – D#m – E – F#. Each chord links to its 4-Voice Polysynth voicings, and the page walks the changes with voiceLeadNearest — the engine that picks whichever next voicing moves the fewest keys.

Voice leading is a keyboard player’s home advantage: common tones stay under the same fingers, and only the moving lines move.