A# DOMINANT NINTH - UKULELE

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Chord composition

I III V ♭VII IX
Root Major third Perfect fifth Minor seventh Major ninth
A# D F G# C

ALL ABOUT THE A# DOMINANT NINTH CHORD

Chord Composition

The A# Dominant Ninth chord is composed of 5 notes :

  • A# (Root)
  • D (Major third)
  • F (Perfect fifth)
  • G# (Minor seventh)
  • C (Major ninth)

These notes form a dominant ninth chord, adding jazz richness and tension.

How to play A# Dominant Ninth on ukulele

The 9 chord A# Dominant Ninth is a dominant seventh chord (1-3-5-7b) with an added major ninth.

  • Complete structure: root, major third, fifth, minor seventh, major ninth (5 notes)
  • Partial voicings: often the fifth is omitted to play on 4 strings
  • Enriched dominant function: more colorful than simple 7 chord
  • Blues and jazz: absolutely essential in these styles

The combination of minor seventh (tension) and major ninth (color) creates a rich sound typical of jazz and sophisticated blues.

Jazz techniques

For 9th chords on ukulele:

  • V7 substitution: replaces the 7 chord for more richness
  • Voicings without fifth: 1-3-7-9 on 4 strings, very common in jazz
  • Enriched resolution: the 9th adds color to V-I resolution

Common uses of A# Dominant Ninth

The 9 chord enriches dominant progressions:

  • Jazz standards: systematically replaces dominant 7 chords
  • Sophisticated blues: enriches 12-bar blues
  • Bossa nova: characteristic color of Brazilian style
  • Funk and soul: 9 chords in syncopated grooves

Musical styles

Jazz: standard dominant chord, omnipresent.

Jazz blues: enriches traditional blues vocabulary.

Bossa nova: defines sophisticated Brazilian sound.

Funk: rich grooves with extensions.

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