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Guitar chords · Dominant 7th

B♭7 chord on guitar (Bb7)

B♭7 (B♭ ) has four notes: B♭, D, F and A♭, the , 3, 5 and ♭7.

Shapes

How to play B♭7

Strum a shape to hear it, or pick it one string at a time. R marks the ; the other numbers are the chord tones.

B♭7 has no common . Play it as the A shape at 1 or the E shape at fret 6. A keeps its fingering anywhere on the neck: slide it up or down and the , on the lowest played string, names the chord.

  • A shape · fret 1

    ×R5♭735B♭FA♭DF
  • E shape · fret 6

    6frR5♭735RB♭FA♭DFB♭
Name a shape you're holding: the chord finder

Notes and formula

What makes B♭7 dominant 7th

A chord is a major chord with a minor 7th added. Its 3rd and 7th are a apart, and that tension pulls it to the chord a 5th below: the V7–I move that ends so many phrases. It is also the sound of the blues.

  • 1Root: the note the chord is named after. Keep it.
  • 3Essential: makes the chord what it is. Never drop it.
  • 5Optional: drop it first when you run out of fingers.

The 3rd and the ♭7th make B♭7 a chord; you can leave out the 5th.

  1. B♭Rroot
  2. D3essential
  3. F5optional
  4. A♭♭7essential
EADGBE0135791215B♭B♭B♭B♭B♭B♭B♭B♭FA♭DFDFA♭DFA♭DFA♭DFA♭DFA♭DFA♭DF
  • B♭, the root
  • Other chord tones

B♭7 usually resolves to E♭ or E♭m, the chord a 5th below: the V7–I move.

B♭7 and A♯7 are the same chord with two names: same , same sound. Which one you see depends on the key the song is written in.

Keys

Keys with B♭7

B♭7 belongs to three keys: E♭ major (V7), E♭ minor (V7, ) and C minor (VII7).

Numerals follow the key's own scale, so III, VI and VII in a minor key are its own major chords. A ♭ or ♯ in front marks a chord from outside the key. How Roman numerals work

Progressions

Progressions with B♭7

Common progressions that use B♭7, each in a key that spells it B♭7. The outlined chord is B♭7.

  • Jazz ii–V–I in E♭ major

    ii7 – V7 – Imaj7

    1. Fm7
    2. B♭7
    3. E♭maj7

    Each chord falls a fifth to the next — a walk anticlockwise around the circle.

    Heard in Autumn Leaves, Fly Me to the Moon

  • 12-bar blues in B♭ major

    I7 – I7 – I7 – I7 – IV7 – IV7 – I7 – I7 – V7 – IV7 – I7 – V7

    1. B♭7
    2. B♭7
    3. B♭7
    4. B♭7
    5. E♭7
    6. E♭7
    7. B♭7
    8. B♭7
    9. F7
    10. E♭7
    11. B♭7
    12. F7

    Dominant 7th chords on I, IV and V across twelve bars. The foundation of blues and early rock 'n' roll.

    Heard in Johnny B. Goode, Pride and Joy, Hound Dog

  • Minor ii–V–i in E♭ minor

    iiø7 – V7 – i7

    1. Fm7♭5
    2. B♭7
    3. E♭m7

    Half-diminished ii, dominant V7 and back to the minor tonic.

    Heard in Blue Bossa, Autumn Leaves

Slash chords

B♭7 over another bass note

A keeps B♭7 on top and puts another note in the bass: the letter after the slash is the lowest note you play.

  • B♭7/D

    B♭7 with its 3rd, D, in the bass: the first inversion.

  • B♭7/F

    B♭7 with its 5th, F, in the bass: the second inversion.

  • B♭7/A♭

    B♭7 with its ♭7th, A♭, in the bass: the third inversion.

Questions

B♭7, in short

What notes are in the B♭7 chord?
B♭7 (B♭ ) has four notes: B♭, D, F and A♭, the , 3, 5 and ♭7.
How do you play B♭7 on guitar?
B♭7 has no common . Play it as the A shape at 1 or the E shape at fret 6.
What key is B♭7 in?
B♭7 belongs to three keys: E♭ major (V7), E♭ minor (V7, ) and C minor (VII7).
Is B♭7 the same as A♯7?
Yes: same frets, same sound, different name. B♭7 is the spelling in E♭ major, E♭ minor and C minor; A♯7 only in D♯ minor.
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