7♭5 chord - ukulele
The 7♭5 chord is a dominant chord with a diminished fifth. This alteration creates a darker sound and can serve as a tritone substitution.
Intervals
| Degree | I | III | ♭V | ♭VII |
|---|---|---|---|---|
| Interval | Root | Major third | Diminished fifth | Minor seventh |
| Semitones | 0 | 4 | 6 | 10 |
Formula 1 - 3 - ♭5 - ♭7
Theory
The 7♭5 chord lowers the fifth by a semitone. C7♭5 = C-E-G♭-B♭, G7♭5 = G-B-D♭-F. The diminished fifth reinforces the tritone tension. This chord shares the same tritone (third-seventh) as the dominant chord a tritone higher, allowing common tritone substitutions in jazz.
Examples
Example: Do 7♭5
Diagrammes non disponibles pour cet accord.
Styles
Construction
Formula 1 - 3 - 5b - 7b: dominant with diminished fifth. Maximum tension, bebop.
Learning
Tritone substitutions. Bebop lines. Altered resolutions.
How to play
Bebop, tritone substitution. Alt dominant. Chromatic resolutions.