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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 sharp
    4. Major seventh sharp ninth sharp eleventh

    G sharp Major seventh sharp ninth sharp eleventh

    Major seventh with ♯9 and ♯11 (1–3–5–7–♯9–♯11); dense altered extensions on major harmony.

    majormaj7♯9♯11

    Guitar diagrams

    Piano voicings

    Sheet music

    Practice the major seventh sharp ninth sharp eleventh chord

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    Which intervals and notes are in the G sharp Major seventh sharp ninth sharp eleventh chord?

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

    Which scales can you play on the G sharp Major seventh sharp ninth sharp eleventh chord?

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

    Practice the major seventh sharp ninth sharp eleventh chord

    Open the app and start your daily workout!

    Learn music theory with sonid

    Available on Android and iOS

    The major seventh sharp ninth sharp eleventh chord stacks maj7 with two strongly altered extensions: ♯9 and ♯11 (1-3-5-7-♯9-♯11 as a conceptual set). It is not a everyday diatonic chord; it behaves like a composed polychord color or a modern jazz voicing choice on major pedals (sometimes related to split-scale or hybrid-scale thinking). Expect a bright, biting, chromatic surface—excellent for short dramatic moments when a plain maj7 is too tame.

    Construction

    Begin from maj7 and add ♯9 and ♯11 above the bass. Exact voicing determines which intervals listeners notice first.

    Usage

    Film scoring, modern jazz reharmonizations, and experimental pop production on static major centers.

    Examples

    • Climax chords in cinematic cues
    • Modern jazz voicings on Imaj7 with Lydian/altered upper structures
    • Keyboard pads that need maximum chromatic tension
    NameAliasesDifficulty
    G sharp Chromatic-Easy
    G sharp Lydian sharp ninth-Guru
    G sharp Messiaen's mode 3-Guru

    Play

    Thin the voicing; separate ♯9 and ♯11 registrally; omit the fifth if needed.

    Ear-training cues

    Major seventh stability with chromatic upper extensions that create sharp, modern dissonance.

    IntervalsemitonesNote
    Perfect unison0G♯
    Major third4B♯
    Perfect fifth7D♯
    Major seventh11F𝄪
    Augmented ninth15A𝄪
    Augmented undecime18C𝄪
    NameAliasesDifficulty
    G sharp MajorM, ^, , majBeginner
    G sharp Minorm, min, -Beginner
    G sharp Major seventhmaj7, Δ, ma7, M7, Maj7, ^7Beginner
    G sharp Fifth5Beginner
    G sharp Diminisheddim, °, oEasy
    m/ma7, m/maj7, mM7, mMaj7, m/M7, -Δ7, mΔ, -^7, -maj7Easy
    M7b5Intermediate
    maj#4, Δ#4, Δ#11, M7#11, ^7#11, maj7#11Intermediate
    oM7Expert
    Mb5Guru
    G sharp Minor major seventh
    G sharp Major seventh flat fifth
    G sharp Major sharp fourth
    G sharp Diminished major seventh
    G sharp Major flat fifth