Ut queant laxis

Circles

Walter Odington

Number triangle (8 : 9)

Walter Odington

Tetraktys square

Walter Odington

Size of Pythagorean Comma

Walter Odington

Greek Tetrachords

Walter Odington

Hexachords

Walter Odington

Triangular grid of durations

Johannes Torkesey

Shield of the Trinity

Petrus Pictaviensis

Diatonic Scale - 12 Semitones

Erasmus Heritius

Lilium Musice Plane

Michael Keinspeck

Tetraktys Hammers

Martin Agricola