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How to play an A#dim chord on Accordion

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

    AKA: A# diminished seventh, A#°, A#dim, A#dim7, A#dim7th, A#dim/6, A#dim(add6)

    Green bass pattern: A#dim7(omit5) = A#m6(omit5)

    Blue counter bass pattern: A#dim7

    A#dim Accordion chord chart

    A# dim notation

    Notes:

    A#, C#, E, G

    A#dim button plays:
    A#, C#, G (no E)

    Intervals:

    R, m3°, dim5°, dim7°

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

    Left hand:

    Green bass pattern:
    A#dim7(omit5), same as A#m6(omit5)

    A# + A#dim
    (B♭ + B♭dim)

    Blue counter bass pattern: A#dim7

    A# + Edim
    (B♭ + F♭dim)

    Fingering:

    4 + 2

     

     

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