piano chord
G♯m(maj7)
G♯1B♭3D♯5F𝄪7
Minor triad, major seventh — the tonic chord of harmonic minor.
Written the other way round it is A♭m(maj7) — the same twelve keys on a piano, a different piece of notation.
What is true of it
G♯m(maj7) is G♯, B, D♯ and F𝄪 — 1, b3, 5 and 7 counted from G♯.
F𝄪 is a double sharp, and it has to be: every letter from G♯ upwards is used once, so the 7 cannot be written any other way.
On an instrument that cannot reach all 4, the 5 goes first, in that order.
G♯ in other shapes
Cm(maj7)C♯m(maj7)D♭m(maj7)Dm(maj7)D♯m(maj7)E♭m(maj7)Em(maj7)Fm(maj7)all 374