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B♭7♯5

Character: restless

  1. B♭Rtriad
  2. D3triad
  3. F♯♯5triad
  4. A♭♭7add
Open B♭7♯5 in the chord libraryDownload the B♭7♯5 chart (PDF)
Voicings

6 ways to play B♭7♯5

Every voicing sits inside one of the five CAGED shapes, low to high on the neck, with its octave doublings in grey.

  • Triad note
  • Substitute
  • Added
  • Anchored root
  • Bass
  • Doubling
CC shape 2nd inversion B♭7♯5/F♯
1 2 3 4 ♭7 3 R ♯5 ♯5 3

Frets 2 1 0 1 3 2Notes F♯ B♭ D A♭Intervals ♯5 1 3 ♭7Base triadB♭ augmented, 2nd inversion

The ♭7th gets a string of its own.

CC shape 3rd inversion B♭7♯5/A♭
10 11 12 13 R ♯5 3 ♭7

Frets x 11 12 11 11 xNotes A♭ D F♯ B♭Intervals ♭7 3 ♯5 1Base triadB♭ augmented, 1st inversion

The ♭7th gets a string of its own.

AA shape 2nd inversion B♭7♯5/F♯
1 2 3 4 ♭7 3 R ♯5

Frets x x 4 3 3 4Notes F♯ B♭ D A♭Intervals ♯5 1 3 ♭7Base triadB♭ augmented, 2nd inversion

The ♭7th gets a string of its own.

GG shape 3rd inversion B♭7♯5/A♭
3 4 5 6 R ♯5 3 ♭7

Frets 4 5 4 3 x xNotes A♭ D F♯ B♭Intervals ♭7 3 ♯5 1Base triadB♭ augmented, 1st inversion

The ♭7th gets a string of its own.

EE shape 3rd inversion B♭7♯5/A♭
6 7 8 9 R ♯5 3 ♭7

Frets x x 6 7 7 6Notes A♭ D F♯ B♭Intervals ♭7 3 ♯5 1Base triadB♭ augmented, 1st inversion

The ♭7th gets a string of its own.

EE shape 2nd inversion B♭7♯5/F♯
6 7 8 9 10 ♭7 3 R ♯5 3 R

Frets 6 9 8 7 9 10Notes F♯ B♭ D A♭Intervals ♯5 1 3 ♭7Base triadB♭ augmented, 2nd inversion

The ♭7th gets a string of its own.

The rules

The construction rules B♭7♯5 follows

  1. Start from a triad

    Root, 3rd and 5th, stacked in thirds. The 3rd makes it major or minor; the 5th makes it diminished or augmented when it moves.

  2. A third on top makes a 7th chord

    A major 7th over a major triad is maj7, a ♭7 is a dominant 7. Over minor you get m7 or m(maj7); over diminished, m7♭5 or the °7, whose 7th is lowered twice.

  3. Alter a dominant for tension

    Raise or lower the 5th or the 9th, or add a ♯11 or ♭13, and a dominant 7th pulls harder towards the next chord: G7♯9, G7♭9, G7♭13.

All the rules, with examples, in the guide to the chord library.

Dominant 7th ♯5 in every key

More chords on B♭

B♭7♯5 chord questions

What notes are in B♭7♯5?

B♭7♯5 is spelled B♭ D F♯ A♭: B♭ is the root, D is the 3rd, F♯ is the ♯5th, A♭ is the ♭7th.

What is the formula of B♭7♯5?

1 3 ♯5 ♭7. It is a B♭ augmented triad with the ♭7th stacked on top.

How many ways can you play B♭7♯5 on guitar?

This page shows 6 voicings of B♭7♯5, filed under the five CAGED shapes and named by inversion, from the open position up to the 16th fret.