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    1. Home
    2. Chord Library
    3. C sharp
    4. Major ninth suspended fourth

    C sharp Major ninth suspended fourth

    Major ninth with sus4; sus openness plus ninth width on a major seventh frame.

    UnknownM9sus4

    Guitar diagrams

    Piano voicings

    Which intervals and notes are in the C sharp Major ninth suspended fourth chord?

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

    Which scales can you play on the C sharp Major ninth suspended fourth chord?

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

    Practice the major ninth suspended fourth chord

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    Practice the major ninth suspended fourth chord

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    Learn music theory with sonid

    Available on Android and iOS

    The major ninth sus4 chord extends maj7sus4 by adding a ninth. It keeps the suspended, third-delayed character while introducing the wider, more contemporary sound of the ninth above the seventh. This is a go-to color in neo-soul, fusion, gospel-influenced pop, and modern jazz when harmony should feel open, expensive, and still fundamentally “major-side” rather than dominant.

    Construction

    Practical stack: 1-4-5-7-9 (the fifth may be omitted). In Cmaj9sus4, a common layer is C-F-G-B-D. The ninth should read as an extension above the seventh, not as a cluster filler squeezed against the fourth.

    Usage

    Use on I or IV colors, on pedal points, and in progressions that move from sus textures into maj9 or triad resolutions. It also works beautifully under melodies that emphasize the fourth and second/ninth degrees.

    Examples

    • Neo-soul keyboard intros and verse pads
    • Fusion vamps with sus melodies
    • Gospel-pop lifts that widen harmony before landing on a clear major third

    Play

    Keep 4 and 7 clear, place the ninth high, and resolve the fourth down to the third when you want a classic sus release.

    NameAliasesDifficulty
    C sharp MajorionianBeginner
    C sharp Harmonic major-Beginner
    C sharp Harmonic minor-Easy
    C sharp Chromatic-Easy
    C sharp Melodic minor-Easy
    -Intermediate
    -Expert
    -Expert
    -Expert
    -Guru
    -Guru
    -Guru
    -Guru

    Harmonic function in progressions

    It functions as rich major-side suspension: stable in a broad sense, but intentionally incomplete until the third appears.

    Ear-training cues

    Hear sus4 plus major seventh plus ninth width—a three-layer modern major color.

    C sharp Minor six diminished
    C sharp Bebop
    C sharp Bebop major
    C sharp Minor bebop
    C sharp Minor hexatonic
    C sharp Messiaen's mode 4
    C sharp Messiaen's mode 7
    C sharp Ichikosucho
    NameAliasesDifficulty
    C sharp Fifth5Beginner
    C sharp Suspended secondsus2Beginner
    C sharp Suspended second and fourthsus24, sus4add9Beginner
    C sharp Suspended fourthsus4, susBeginner
    C sharp Major seventh suspended fourthM7sus4Easy
    IntervalsemitonesNote
    Perfect unison0C♯
    Perfect fourth5F♯
    Perfect fifth7G♯
    Major seventh11B♯
    Major ninth14D♯