Bb13(#5) chord - Bb Dominant Thirteen Sharp Fifth - guitar chord chart
Spelled Bb, D, F#, Ab, C, Eb and G, Bb13#5 is the Bb thirteenth sharp five chord, with the root, major third, raised fifth, minor seventh, ninth, natural eleventh and thirteenth above its root.
The F# is the raised fifth, one semitone above the natural fifth F. The major third D and the minor seventh Ab give the chord its dominant identity, and the raised fifth, ninth, eleventh and thirteenth are the colours stacked above them.
The natural eleventh Eb sits a half step above the major third D, a close neighbour inside the stack.
Bb 13th with sharp 5th guitar chord is also written as Bb13(#5), Bb13#5 or Bb13+5.
Bb 13(#5) chord Notes:
How the Dominant Thirteen Sharp Fifth chord is built:
Formula: 1 3 #5 b7 9 11 13
Bb 13(#5) Chord Interactive Fretboard
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Created by
Giancarlo is a musician (teaching guitar since 2000), software engineer, AI consultant and published researcher
FAQ
What notes spell Bb13#5?
Bb13#5 is Bb, D, F#, Ab, C, Eb and G. It stacks a major third, sharp fifth, minor seventh, ninth, eleventh and thirteenth over Bb.
Are Bb13#5 and A#13#5 the same chord?
Yes, they share every pitch. A#13#5 spells them A#, C##, E##, G#, B#, D# and F##, so Bb13#5 is the cleaner name.
What does the sharp five in Bb13#5 do?
It raises the fifth from F to F#, a half step higher. Together with Bb and D it forms an augmented triad at the base of the chord.
How is Bb13#5 different from Bb13?
The fifth. Bb13 uses the perfect fifth, F, while Bb13#5 raises it to F#, which gives the chord an augmented sound.
