Chords for the 4-Voice Polysynth

Pick a root — four voices force choices, and every chart shows them.

The 4-Voice Polysynth chord reference: pick a root, then any of 62 qualities, and get voicings drawn on the keyboard itself — 4 voices across its 49 keys (C2–C6), with fingerable maps and audio on every chart.

The 4-Voice Polysynth allots 4 voices across its 49 keys (C2–C6): enough for most qualities, but the extended colors make the reducer earn its keep — each chart shows the arithmetic.