F Dominant 7th Flat 9 Sharp 9
F7b9#9 · Piano chord
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F – A – C – Eb – Gb – G#
1 – 3 – 5 – b7 – b9 – #9
This dominant chord combines flat and sharp ninth tensions with the full dominant seventh foundation.
The F7b9#9 chord sounds distinctive, with a dominant 7th flat 9 sharp 9 character. Its notes are F, A, C, Eb, Gb, G#.