B13b9 chord
B13b9 chord for piano presented by keyboard diagrams.
Explanation: The B13b9 alter the B13 by the change of one note. The B thirteenth flat ninth is a seven-note chord, but due to practical circumstances, one or more notes (the fifth primarily) are omitted. The chord name can also be written as B13(b9) or B13-9.
Theory: Compared to B13 the ninth tone in the chord is flattenedThe tone is one half step lower.
B13b9

Notes: B - D# - F# - A - C - E - G#
Bb13b9 chord ‹ Previous • Next › C13b9 chord
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Polychord B7 (LH), C# (RH)
B13#11 polychord
Explanation: The image below shows a polychord version of the B13#11. The chord is played in two parts with both hands.

Polychord B7 (LH), C# (RH)