Unequal Temperament is a project devoted to preserving the art, science, and history of piano tuning.
Instruction and presentations on this topic come in forms of college lectures, group instruction for tuners, and individual tuning services.
Going around the circle of fifths, we see different shapes for each triad. Outer circles are fifths, green inner circles are major thirds, and red inner circles are minor thirds.
The differences between equal-tempered intervals and pure intervals are shown with different textures.
Musical compositions have structure in time, just as buildings have in space. Tuning systems have structure in sound.
Obvserve the change of tuning systems throughout time.
A leering key, degenerating into grief and rapture. It cannot laugh, but it can smile; it cannot howl, but it can at least grimace its crying.--Consequently only unusual characters and feelings can be brought out in this key.
Penitential lamentation, intimate conversation with God, the friend and help-meet of life; sighs of disappointed friendship and love lie in its radius.