A 7#9, 4th inversion (B# in the bass)
Notes, from the bass up
B# (bass)AC#EG
The same notes as A 7#9 (B#, A, C#, E and G), rearranged so B# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.
The same notes as A 7#9 (B#, A, C#, E and G), rearranged so B# is the lowest note. Use it to move between chords with smaller jumps across the keyboard.