Jazz chords

There are 46 chord qualities here and213 voicings between them, drawn from the encyclopedia inside the app. Each page carries one quality in all12 keys, with the voicings written out, the theory behind the spelling, and what the chord is usually standing in for.

Grouping by quality rather than by chord is a deliberate choice and it is worth a sentence. A page for C major seventh and a page for D-flat major seventh would be the same page with the letters changed — same theory, same voicing shapes, same substitutions — and forty-six articles republished twelve times each is not a reference, it is padding. The twelve keys live inside each page instead.

8 further entries in the encyclopedia are individual slash voicings rather than families — they exist in one or a few keys rather than all twelve — and they are not published here, because a page built on one of them would claim a completeness the data does not have.