Chord & FretAdded-tone
symbols, sound and when to use them
The add9 adds the ninth straight onto the triad, without the seventh — a bright, open, modern sound common in pop and acoustic music. Unlike the ninth chord (which includes the seventh), it stays light.
Symbols in this family · 2 qualities
Every symbol opens that chord’s own page: what it is, how it sounds, when to use it and its diagram on all four instruments.
Every position on the neck — in the app
Here the explanation of each chord in the family stays open, with one diagram per instrument. The app is where the same harmony becomes the whole neck: every position, the inversions and the alternate tunings, with audio and no connection needed.
Get the whole library in the app — free to start →