scale
Ukulele fretboard diagram
A# lydian #9 scale — ukulele chords and intervals
The harmonized A# lydian #9 scale produces an aggressive, high-energy chord family with both a raised fourth and a raised ninth that create intense harmonic friction. The chords from A# lydian #9 are A# major, B## diminished, D minor, E diminished, F augmented, G minor, A major. These chords are designed for fusion and modern jazz solos where maximum intensity and complexity are desired. The double alteration creates a biting, energetic harmonic palette. Commonly used in Fusion, Modern Jazz, Progressive. Notable players include Allan Holdsworth, Brett Garsed.
The A# lydian #9 scale has the following degrees: 1 ♯2 3 ♯4 5 6 7.
Intervals: 3H-H-W-H-W-W-H.
Diatonic chords: A# major, B## diminished, D minor, E diminished, F augmented, G minor, A major.
| Degrees | Chord |
|---|---|
| I | A# major |
| ii | B## diminished |
| iii | D minor |
| IV | E diminished |
| V | F augmented |
| vi | G minor |
| vii° | A major |
Degree-by-Degree Analysis
The I chord (A# major) is the tonic — the gravitational center of the key. The ii chord (B## diminished) is the minor subdominant, commonly used to approach the V chord. The iii chord (D minor) functions as a substitute for the I or vi. The IV chord (E diminished) is the subdominant — it adds motion and moderate tension. The V chord (F augmented) is the dominant — it creates the strongest tension that wants to resolve to the I. The vi chord (G minor) is the relative minor — it brings emotional color and depth. The vii° chord (A major) is the diminished — the most tense, rarely used alone, usually leading to the I.
This page focuses on the harmonic content — the chords built from each degree of the A# lydian #9 scale. For fretboard patterns and fingering guides, see the scale page.
Use the interactive harmonizer above to explore triads, seventh chords, and chord voicings for composing with the A# lydian #9 scale on ukulele.
Related Scales
How to Use This Scale
Use over 7#9#11 chords. A specialized fusion tool for adding a sharp, biting edge to Lydian-based lines.