The F-sharp major sixth-ninth chord (abbreviated "F#6/9 chord") is a five-note chord consisting of the notes F♯, A♯, C♯, D♯, and G♯. The chord is formed by adding a major sixth and a major ninth to a F-sharp major chord.
F-sharp major sixth-ninth chord
F♯ A♯ C♯ D♯ G♯
1 3 5 6 9
pentad (five-note chord)