Bb natural minor scale
(or Aeolian mode scale)

Listen

Bb minor notes: Bb C Db Eb F Gb Ab

3-notes chords built on Bb minor scale:

1. Bb Minor: Bb Db F
2. C Diminished: C Eb Gb
3. Db Major: Db F Ab
4. Eb Minor: Eb Gb Bb
5. F Minor: F Ab Bb
6. Gb Major: Gb Bb Db
7. Ab Major: Ab C Eb

4-notes chords built on Bb minor scale:

1. Bb Minor 7: Bb Db F Ab
2. C Half Diminished 7: C Eb Gb Bb
3. Db Major 7: Db F Ab Bb
4. Eb Minor 7: Eb Gb Bb Db
5. F Minor 7: F Ab Bb Db
6. Gb Major 7: Gb Bb Db F
7. Ab Dominant 7: Ab C Eb Gb