F# Half-Diminished 9th
F#m9b5 · Piano chord
Interactive keys, sheet music, and playback controls load after this preview.
F# – A – C – E – G#
1 – b3 – b5 – b7 – 9
The half-diminished ninth is a minor-key ii chord commonly paired with Locrian natural 2.
The F#m9b5 chord sounds distinctive, with a half-diminished 9th character. Its notes are F#, A, C, E, G#.