What notes are in a B♭maj7 chord?

B♭maj7 contains four notes: B♭ (root), D (major third), F (perfect fifth), and A (major seventh).

How is B♭maj7 different from B♭7?

Only the seventh changes. B♭maj7 has A natural; B♭7 has A♭. The maj7 sounds stable; the dom7 wants to resolve to E♭.

What jazz standards use B♭maj7?

"Confirmation," "Anthropology," "Donna Lee" — all Charlie Parker / bebop standards in B♭. "Just Friends," "Have You Met Miss Jones" (in F but with B♭ excursions), and most B♭-major big-band charts.

Why is B♭ major so common in jazz?

Because B♭ is the natural concert key for trumpets, tenor saxes, and clarinets. Most jazz tunes were originally arranged for big bands, and B♭ puts the horns in their easiest registers.

Bb major 7 chord — notes, intervals, and practice

B♭ major 7 (B♭maj7) — B♭, D, F, A — is B♭ major with a major 7th on top. The chord is fundamental to big-band jazz because B♭ is the natural key for trumpets, tenor saxophones, and clarinets (B♭ instruments). Most jazz "fake books" notate tunes in B♭ specifically because the horns play comfortably there.

Intervals

The Bb major 7 chord stacks two thirds on the root. Each interval and its size in semitones:

Bb→Dmajor 3rd4 semitones
D→Fminor 3rd3 semitones
F→Amajor 3rd4 semitones

On the keyboard

Each note of the Bb major 7 chord highlighted on a piano. Pitch class is what matters — any octave works.

On the guitar

One voicing of the Bb major 7 chord on a six-string guitar fretboard.

Common mistakes

B♭maj7 has A natural as its 7th — a half-step higher than B♭7 (which has A♭). The half-step shift turns a stable I chord into a tense dominant. On guitar, B♭maj7 is most often a 1st-fret A-shape barre with the 4th-string finger adjusted to grab the major 7th.

In context

B♭maj7 is the I chord in B♭ major. The ii–V–I runs Cm7 → F7 → B♭maj7. The chord underlies many big-band charts and bebop standards including "Confirmation," "Anthropology," and "Donna Lee" — all in B♭ major and all centred on B♭maj7 as the home chord.

Drill it

The Bb major 7 chord is one of 48 in the Chord Trainer. Open the full trainer to practice it alongside related chords with timing and best-time tracking.

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Frequently asked

What notes are in a B♭maj7 chord?: B♭maj7 contains four notes: B♭ (root), D (major third), F (perfect fifth), and A (major seventh).
How is B♭maj7 different from B♭7?: Only the seventh changes. B♭maj7 has A natural; B♭7 has A♭. The maj7 sounds stable; the dom7 wants to resolve to E♭.
What jazz standards use B♭maj7?: "Confirmation," "Anthropology," "Donna Lee" — all Charlie Parker / bebop standards in B♭. "Just Friends," "Have You Met Miss Jones" (in F but with B♭ excursions), and most B♭-major big-band charts.
Why is B♭ major so common in jazz?: Because B♭ is the natural concert key for trumpets, tenor saxes, and clarinets. Most jazz tunes were originally arranged for big bands, and B♭ puts the horns in their easiest registers.