Analysis Course 2 · Professional
The circle of fifths as a tuning map
Read, hear, and historically position equal temperament, Vallotti, and meantone.
Station 1 of 7
Baseline: equal temperament
The circle shows the twelve pitch classes in fifth-neighbour order, not a list of keys. It measures deviation from equal temperament. Everything is therefore zero: the system is its own baseline.
Equal temperament
Δ = 0 ct