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    YoutubeMusic Theory Video SeriesA step-by-step guide to music theory fundamentals. These 60-second videos provide a clear, structured path to understanding how music works, optimized for a full-screen learning experience.YoutubeMusic Theory ShortsMaster music theory concepts in 60 seconds or less. Quick, vertical videos designed to give you essential theory knowledge in a fast-paced, mobile-friendly format.
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    1. Home
    2. Chord Library
    3. G flat
    4. Dominant ninth

    G flat Dominant ninth

    Dominant seventh with added ninth; richer dominant tension that still resolves strongly to tonic.

    major9

    Similar chords

    Guitar diagrams

    Which intervals and notes are in the G flat Dominant ninth chord?

    Intervals from the root that spell this chord and its chord tones.

    To which mode does G flat Dominant ninth belong?

    Parent scales and degrees where this chord appears as a diatonic sonority.

    Which scales can you play on the G flat Dominant ninth chord?

    Scales that contain this chord’s notes and usually fit over it.

    Practice the dominant ninth chord

    Open the app and start your daily workout!

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    Piano voicings

    Sheet music

    Practice the dominant ninth chord

    Open the app and start your daily workout!

    Learn music theory with sonid

    Available on Android and iOS

    The dominant ninth chord extends a dominant seventh by adding the ninth, giving you classic dominant pull with extra color and breadth. In charts, this appears as C9: tense, expressive, and still clearly functional.

    How it's built

    Use 1-3-5-♭7-9. In C9: C-E-G-B♭-D. In practical voicings, the fifth is often omitted so the guide tones (3 and ♭7) plus color (9) stay clear.

    Usage

    In jazz, soul, funk, blues, and modern pop, the 9 is a go-to dominant color when you want richness without losing direction toward resolution.

    Examples

    • Jazz turnarounds - V9 resolving to I or i
    • Funk and soul comping - colorful, groove-forward dominant stabs
    • Pop arranging - refined dominant lift in pre-chorus and bridges

    Play

    Lead the 3 and ♭7 smoothly, and place the 9 where it sings above the voicing. Keep the midrange uncluttered so the dominant function remains obvious.

    G♭ 5
    G♭ 7
    G♭ 7no5
    G♭ 9no5
    G♭ M
    G♭ Madd9
    G♭ sus2
    G♭ Bebop
    G♭ Bebop minor
    G♭ Chromatic
    G♭ Composite blues
    G♭ Lydian Dominant
    G♭ Lydian minor
    G♭ Messiaen's mode 3
    G♭ Mixolydian
    G♭ Mixolydian flat sixth
    IntervalsemitonesNote
    0G♭
    4B♭
    7D♭
    10F♭
    14A♭
    Perfect unison
    Major third
    Perfect fifth
    Minor seventh
    Major ninth

    DegreeTriadSeventhExtendedScale
    I
    II
    III
    IV
    V
    VI
    VII

    These modes come from a defined series of intervals! Checkout our blogpost about the major modes!

    M
    maj7
    maj13
    maj9
    Major
    m
    m7
    m9
    m11
    m13
    m69
    Dorian
    m
    m7
    m
    Phrygian
    M
    maj7
    M13♯11
    maj9♯11
    Lydian
    M
    7
    13
    9
    7no5
    Mixolydian
    m
    m7
    m9
    m11
    madd9
    Minor
    m7♭5
    Locrian