G m7b9 Chord
How the G m7b9 chord is built: its notes, its interval structure, and where it fits.
The G m7b9 chord contains 5 notes: G – G# – A# – D – F. It belongs to the altered family of chord qualities. Like every chord, it is defined by the distances (intervals) between its notes, not by any one instrument — which is why the same formula names the chord whether it is voiced on a fretboard, a keyboard, or a choir.