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7b9 Chords

Dominant seventh flat ninth chords (7b9) consist of a root, a major third, a perfect fifth, a minor seventh, and a flat ninth of the major scale built on the root.

Standard bass system allows you to play 7b9 chords on the accordion combining the root bass with the diminished chord of its minor 7th degree.

7b9 chords on Accordion in all keys: