MisterShafXen's 20edo notation

Here’s how I notate 20edo:

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/Minor: 0 6 12, A C E, A.

Sus4: 0 8 12, A Db E, Asus(b4).

Sus2: 0 4 12, A B# E, Asus(#2).

5-limit tetrads

Dom7/Min7/Maj7/Min-maj7: 0 6 12 18, A C E G, A7.

7sus4/Maj7sus4: 0 8 12 18, A Db E G, A7sus(b4).

7sus2/Maj7sus2: 0 4 12 18, A B# E G, A7sus(#2).

7-limit triads

Diminished: 0 6 10, A C D#, Adim.

7-limit tetrads

Harm7/Min-harm7: 0 6 12 16, A C E F#, A(M6).

Dim7: 0 6 10 16, A C D# F#, Adim(M6).

11-limit triads:

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

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

Augmented: 0 6 13, A C E#, A(M5).

11-limit tetrads

Neu7: 0 5 12 17, A Cb E Gb, Am7.

Aug7: 0 6 13 18, A C E# G, A7#5.

See also

• MisterShafXen’s notation hub