Lab
Chordae
Chordae
A personal music-learning lab for scale geometry, chord colors, notation, and composition prompts.
Family
C Major (Ionian)
Keyboard
CDEFGAB
C
D
E
F
G
A
B
C
D
E
F
G
A
B
Stave
Treble clef reference view.
Compose
Options in C major
Diatonic chords
Progression
Harmony mode
Genre flavor
Tap + on any chord above to build a progression.
Related scales
Progressions
I-V-vi-IV
Direct, hook-forward pop movement.
ii-V-I
Cadential movement and jazz vocabulary.
I-vi-ii-V
Songwriting loop with forward pull.