The One ThingPractising the Theory for Progressive and Jazz Guitarists

The key of B minor

B C♯ D E F♯ G A

2 sharps: F♯ C♯. Relative major: The key of D major.

The triads of the key

i
Bm

ii°
C♯°

III
D

iv
Em

v
F♯m

VI
G

VII
A

i7
Bm7

iiø7
C♯m7♭5

IIImaj7
Dmaj7

iv7
Em7

v7
F♯m7

VImaj7
Gmaj7

VII7
A7

In practice the V of a minor key is almost always major, taken from the harmonic minor: F♯7 (V7), which carries the leading tone A♯.