Gb13b9 chord
Gb13b9 chord for piano presented by keyboard diagrams.
Explanation: The Gb13b9 alter the Gb13 by the change of one note. The G flat 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 Gb13(b9) or Gb13-9.
Theory: Compared to Gb13 the ninth tone in the chord is flattenedThe tone is one half step lower.
Gb13b9
Notes: Gb - Bb - Db - E - G - B - Eb / Gb - Bb - Db - Fb - G - Cb - Eb
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Polychord Gb7 (LH), Ab (RH)
Gb13#11 polychord
Explanation: The image below shows a polychord version of the Gb13#11. The chord is played in two parts with both hands.
Polychord Gb7 (LH), Ab (RH)