The One ThingPractising the Theory for Progressive and Jazz Guitarists

The key of B♭ major

B♭ C D E♭ F G A

2 flats: B♭ E♭. Relative minor: The key of G minor.

The triads of the key

I
B♭

ii
Cm

iii
Dm

IV
E♭

V
F

vi
Gm

vii°
A°

The seventh chords

Imaj7
B♭maj7

ii7
Cm7

iii7
Dm7

IVmaj7
E♭maj7

V7
F7

vi7
Gm7

viiø7
Am7♭5

B♭ major scale

Open it in the app: 6. Harmony, in B♭