MisterShafXen’s 21edo notation

Here’s how I notate 21edo:

A A# Bb B B# Cb C C# Db D D# Eb E E# Fb F F# Gb G G# Ab (A)

Chords

5-limit triads

Major: 0 7 12, A C# E, Amaj.

Minor: 0 5 12, A Cb E, Am.

5-limit tetrads

Dom7: 0 7 12 17, A C# E Gb, Adom7.

Min7: 0 5 12 17, A Cb E Gb, Am7.

Maj7: 0 7 12 19, A C# E G#, Amaj7.

Min-maj7: 0 5 12 19, A Cb E G#, AmM7.

7-limit triads

Diminished: 0 5 10, A Cb D#, Adim.

7-limit tetrads

Dim7: 0 5 10 16, A Cb D# F#, Adim7.

Min7b5, 0 5 10 17, A Cb D# Gb, Adim(m7).

Dim-maj7: 0 5 10 19, A Cb D# G#, Adim(M7).

11-limit triads

Augmented: 0 7 14, A C# Fb, AMm6.

11-limit tetrads

Aug7: 0 7 14 19, A C# Fb G#, Amaj7sus(b6).

See also

• MisterShafXen’s notation hub