Chord Lab

songwriter's harmonic sandbox

Key

Scale

BPM

in-key only

Diatonic palette — click to preview · hover for keyboard

I

C

C · E · G

ii

D

m

D · F · A

iii

E

m

E · G · B

IV

F

F · A · C

V

G

G · B · D

vi

A

m

A · C · E

vii°

B

°

B · D · F

Progression

M1

M2

M3

M4

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