B sharp dominant ninth

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MSK 007 Leapfrog VCF (patch; see in online store)
MSK 009 Coiler VCF (patch; see in online store)

Equivalent chord symbols: C9, C7+2, B♯7+2, CM9♭7, B♯M9♭7, B♭9♭5♭7.

Notes in this chord: B♯, D♯♯, F♯♯, A♯, C♯♯. Integer notation: {0, 2, 4, 7, 10}.

Keys in which this chord fits with this spelling: E♯M

Keys in which this chord fits with enharmonic spelling: FM, Dm

Nearby chords (one less note): C7, C+2, Gm+4, B♭6♭5, B♭♭5+2.

Nearby chords (one more note): C11, C9+6, C9+♯1, C9+♯2, C9+♯5, C9+♯7, D11♯5.

Parallel chords (same structure, different root): C9, D9, E9, F9, G9, A9, B9, C♭9, D♭9, E♭9, F♭9, G♭9, A♭9, B♭9, C♯9, D♯9, E♯9, F♯9, G♯9, A♯9.

Experimental fretting charts for guitar standard EADGBE tuning (change tuning or instrument):