Bb Hirajoshi Scale

Bb
F
Db
Bb
Gb
C
Bb
F
C
Db
Gb
Db
F
C
Bb
Gb
Db
F
C
Bb
F
Gb
Db
Gb
Bb
F
C
Gb
Db
C
Bb
F
Db
Bb
Gb
C
Bb
F
C
Db
Gb
Db
F
C
Bb
Gb
Db
F
C
Bb
F
Gb
Db
Gb
Bb
F
C
Gb
Db
C
Bb
F
Db
Bb
Gb
C
Bb
F
C
Db
Gb
Db

Bb Hirajoshi Scale notes: Bb C Db F Gb. Formula: 1 2 b3 5 b6. Chords that fit it: Bbm, Bbsus2, Bb5.

Hirajoshi is a five-note Japanese scale: 1 2 b3 5 b6. Two half steps, 2 to b3 and 5 to b6, give it a plaintive sound that recalls the koto. It works like a minor pentatonic with a different color, so rock and metal players use it for an instant Japanese flavor.