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How to play an Abdim chord on Accordion

    On the Stradella bass system, diminished 7th chords are also minor 6th chords

    AKA: Ab diminished seventh, Ab°, Abdim, Abdim7, Abdim7th, Abdim/6, Abdim(add6)

    Green bass pattern: Abdim7(omit5) = Abm6(omit5)

    Blue counter bass pattern: Abdim7

    Abdim Accordion chord chart

    Ab dim notation

    Notes:

    A♭, C♭, E♭♭, G♭♭
    (A♭, B, D, F)

    A♭dim button plays:
    A♭, C♭, G♭♭ (no E♭♭)
    (A♭, B, F) (no D)

    Intervals:

    R, m3°, dim5°, dim7°

    Dim buttons play:
    R, m3°, dim7° (no dim5°)

    Left hand:

    Green bass pattern:
    Abdim7(omit5), same as Abm6(omit5)

    A♭ + A♭dim
    (G# + G#dim)

    Blue counter bass pattern: Abdim7

    Enharmonic G# + Ddim

    Fingering:

    4 + 2

     

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