B♭7♯9
B♭ 7th Sharp 9 · 4 fingerings
The famous Hendrix chord: B♭7♯9 sets a raised ninth against the major third, so the major and minor thirds sound at once. That deliberate clash is the sound of psychedelic rock, funk, and hard-edged blues, and it's just as much a jazz chord. Gritty and unmistakable, and surprisingly easy to grab once you know the shape.
B♭7♯9 · position 1
B♭7♯9 · position 2 · fret 6
B♭7♯9 · position 3 · fret 7
B♭7♯9 · position 4 · fret 12