Chord · Ukulele
B♭ 7 Sharp 9 Chord · Ukulele
Fretboard map · Ukulele
Find every available note across the first 12 frets.
Notes
B♭ · D · F · A♭ · C♯
Root: B♭
Intervals
1 · 3 · 5 · ♭7 · ♯9
How it is built
This chord starts on B♭ and applies the intervals 1, 3, 5, ♭7, ♯9. The result contains 5 distinct pitch classes per octave.
Explore related combinations
Guide and musical context
About B♭ 7 Sharp 9 Ukulele Chord
B♭ 7 Sharp 9 Ukulele chord contains B♭, D, F, A♭, C♯. Its sound is aggressive and ambiguous because the major third coexists with a sharp ninth, enharmonically a minor third.
Character and sound
Aggressive and ambiguous because the major third coexists with a sharp ninth, enharmonically a minor third.
Musical context and history
The sharp-nine dominant is a recognizable color in blues, rock, funk and jazz, where major- and minor-derived tensions coexist.
How and where it is used
It is used for strongly colored dominants and riffs where the third–sharp-nine friction is part of the sound.
On ukulele, re-entrant tuning means the physical string order is not simply low to high. That makes the actual fretboard positions and playback especially useful when choosing a fingering. Everything you see and hear on this page comes from the same note set shown above.
Harmonic and musical relationships
As a dominant sonority on B♭, a common functional resolution moves toward E♭. Alterations and extensions change the color while preserving that tension-and-resolution reference.
The formula on this page is 1 · 3 · 5 · ♭7 · ♯9 and, from B♭, produces the notes B♭ · D · F · A♭ · C♯.
Frequently asked questions
What notes are in the B♭ 7 Sharp 9 Ukulele chord?
The notes are B♭, D, F, A♭, C♯.
What is its interval formula?
The formula is 1 · 3 · 5 · ♭7 · ♯9.
How does it sound and what is it used for?
Aggressive and ambiguous because the major third coexists with a sharp ninth, enharmonically a minor third. It is used for strongly colored dominants and riffs where the third–sharp-nine friction is part of the sound.
How can I check it on Ukulele?
Use the interactive diagram on this page and press Play or Note by note. The highlighted positions, written notes and playback all use the same pitch collection.