B♭ Major 7th
Also Known As
Hear the B♭ Major 7th chord played for you.
B♭maj7
B♭ – D – F – A
Formula:R-M3-P5-M7
Intervals:P1-M3-P5-M7
Scale Degrees:1-3-5-7
Introduction
The B♭ Major 7th chord is a four-note chord made up of B♭, D, F, and A. It is built from a root, major third, perfect fifth, and major seventh.
The Bb Major 7th piano chord (Bbmaj7) consists of the notes Bb, D, F, A. It is a major triad with an added major 7th, giving it a dreamy, sophisticated, and jazzy sound. Formula: R-M3-P5-M7 | Scale degrees: 1-3-5-7.
Notes
B♭ Major 7th Inversions
| Position | Notes |
|---|---|
| Root Position | Bb4 – D5 – F5 – A5 |
| 1st Inversion | D5 – F5 – A5 – Bb5 |
| 2nd Inversion | F5 – A5 – Bb5 – D6 |
| 3rd Inversion | Bb4 – D5 – F5 – A4 |
Key Signature
The key of Bb Major 7th has 2 flats.
B♭E♭
Order of flats
Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.
B♭E♭A♭D♭G♭C♭F♭
Mnemonic: Battle Ends And Down Goes Charles’ Father
Chords in the Key of Bb Major
These are the diatonic triads built on each degree of the Bb major scale:
C
D
E
F
G
A
B
C
D
E
F
G
A
B
I — B♭ Major (major)
Theory: Intervals
Formula: R-M3-P5-M7
Intervals: P1-M3-P5-M7
The B♭ Major 7th is built by stacking intervals from the root note. The formula R-M3-P5-M7 describes the scale degrees used. The intervals P1-M3-P5-M7 show the distance between each note in the chord.
B♭ Major 7th — Frequently Asked Questions
What notes are in the Bb Major 7th chord?
The Bb Major 7th chord (Bbmaj7) contains four notes: Bb (root), D (major third), F (perfect fifth), and A (major seventh). The major seventh gives this chord its warm, dreamy, resolved quality.
How does Bb Major 7th differ from Bb Dominant 7th?
Both contain Bb, D, and F. The difference is the seventh: Bbmaj7 has A (major seventh) while Bb7 has Ab (minor seventh). Bbmaj7 sounds lush and settled; Bb7 sounds tense and drives toward Eb Major.
How is Bb Major 7th used in music?
Bbmaj7 is the I chord in jazz harmony in Bb Major — one of the most common jazz keys. It is also the IV chord in F Major. Bbmaj7 appears constantly in jazz standards, big band, and brass-heavy arrangements since Bb is the natural key for many wind instruments.
What genres commonly use Major 7th chords?
Major 7th chords are foundational in jazz, bossa nova, neo-soul, R&B, city pop, and lo-fi hip-hop. They also appear in classical impressionism and sophisticated pop. The dreamy quality is a signature of harmonically rich music.
What songs use Major 7th chords?
Major 7th chords appear in The Girl from Ipanema (Jobim), Don't Know Why (Norah Jones), and countless jazz standards. Bbmaj7 appears in many jazz standards since Bb is one of the most common keys in the jazz repertoire.
Can I substitute Bb Major 7th for Bb Major?
Yes — Bbmaj7 can replace Bb Major for added colour and warmth. The exception is when the melody sits on Bb, since the A–Bb semitone can clash. In jazz contexts, Bbmaj7 is almost always preferred over a plain Bb triad.
Practice Tips
- Play Bb Major then add A — hear the dreamy warmth that transforms a simple triad into a jazz chord.
- Compare Bbmaj7 with Bb7 — one semitone (A vs Ab) is the difference between rest and motion. This distinction is critical in jazz.
- Practice the jazz ii–V–I in Bb: Cm7 → F7 → Bbmaj7. Bb Major is one of the most common jazz keys — this progression must be automatic.
- Bbmaj7 is the IV chord in F Major — try Fmaj7 → Bbmaj7 for a warm two-chord vamp common in jazz and bossa nova.
- Try spread voicings: Bb–F–A–D for a spacious, modern sound that suits contemporary jazz and neo-soul.
- Bb Major is the natural key for trumpet, clarinet, and tenor sax — knowing Bbmaj7 voicings fluently helps when playing with horn players.
Related Tools
Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.