Bb Minor 13th
Notes:Bb – Db – F – Ab – C – Eb – G
Formula:R-m3-P5-m7-M9-P11-M13
Intervals:P1-m3-P5-m7-M9-P11-M13
Scale Degrees:1-b3-5-b7-9-11-13
Introduction
The Bb Minor 13th piano chord (Bbm13) consists of the notes Bb, Db, F, Ab, C, Eb, G. It is a minor 11th chord with an added major 13th, giving it a dark and sophisticated character often used in jazz ballads and modal jazz. Formula: R-m3-P5-m7-M9-P11-M13 | Scale degrees: 1-b3-5-b7-9-11-13.
Enharmonic equivalent: B♭ is enharmonically equivalent to A♯. See A# Minor 13th.
Notes
Bb Minor 13th Inversions
| Position | Notes |
|---|---|
| Root Position | Bb4 – Db5 – F5 – Ab5 – C6 – G6 – Eb6 |
| 1st Inversion | Db5 – F5 – Ab5 – Bb5 – C6 – G6 – Eb6 |
| 2nd Inversion | F5 – Ab5 – Bb5 – C6 – G6 – Db6 – Eb6 |
Key Signature
The key of Bb Minor 13th has 5 flats: B♭, E♭, A♭, D♭, G♭.
B♭E♭A♭D♭G♭
Theory: Intervals
Formula: R-m3-P5-m7-M9-P11-M13
Intervals: P1-m3-P5-m7-M9-P11-M13
The Bb Minor 13th is built by stacking intervals from the root note. The formula R-m3-P5-m7-M9-P11-M13 describes the scale degrees used. The intervals P1-m3-P5-m7-M9-P11-M13 show the distance between each note in the chord.
Bb Minor 13th — Frequently Asked Questions
What notes are in the Bb Minor 13th chord?
Practical voicing: Bb–Db–Ab–C–G.
How does Bbm13 differ from Bb13?
Bbm13 has minor third (Db). Bb13 has major third (D).
How is Bbm13 used in music?
Richest ii in Ab Major. Jazz, R&B, gospel.
How does Bbm13 differ from Bbm11?
Adds the thirteenth (G) for brightness.
What songs use Minor 13th chords?
Modal jazz, neo-soul, gospel.
Do I need to play all seven notes?
No — Bb–Db–Ab–C–G.
Practice Tips
- Practical voicing: Bb–Db–Ab–C–G.
- Bbm13 as ii in Ab — common in jazz and R&B.
- The thirteenth (G) brightens the dark minor.
- Practice Bbm13 → Eb13 → Abmaj13.
- Rootless: Db–Ab–C–G.
- Beautiful in gospel and R&B ballads.