This is the G-sharp major-7th chord, or G#maj7: D string = G# (root note) G string = C (major 3rd) B string = D# (perfect 5th) High E string...

G#m6add9 is built from these notes: D string = G# (root note) G string = B (minor 3rd) B string = F (major 6th) High E string = A# (added 9t...