D 7(b9)(#9)/F#
The D 7(b9)(#9) chord consists of the D (Perfect unison), F# (Major third), A (Perfect fifth), C (Minor seventh), D# (Minor ninth) and F (Minor tenth) notes, with F# as the bass note.
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How to play the D 7(b9)(#9)/F# chord
- Play F# as the lowest bass note in the left hand
- Find D (Root) on the piano keyboard
- Add F# (Major third) — 4 semitones above D
- Add A (Perfect fifth) — 7 semitones above D
- Add C (Minor seventh) — 10 semitones above D
- Add D# (Minor ninth) — 13 semitones above D
- Add F (Minor tenth) — 15 semitones above D
- Press all 7 notes simultaneously to sound the D 7(b9)(#9)/F# chord