Circle of Fifths

The circle of fifths arranges the twelve notes of the chromatic scale in a circle. The next note clockwise is a fifth higher. This version displays the chords in every key. There are twelve major chords (triads) shown with upper case letters and twelve minor chords shown with lower case letters. For each key the chords in that key are highlighted. Major keys are in orange. Minor keys are in blue. In both cases the root (or I chord) is highlighted.

This first circle below can have it's key changed. Set Key: You can also change the key by clicking on the circle.

temporarily, just testing. tonal center: mode:

In this second circle below the key changes every hour on the half hour. Major keys (orange) during the day (5:30 AM to 5:30 PM). Minor keys (blue) during the night (5:30 PM to 5:30 AM).

Someday:

Set key selector when the cicle key changes (by click).
Keep three drop down selector controls in sync.
Caps only in "tonal center" selector.