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9sus4 Chords

Dominant seventh ninth suspended chords (9sus4) consist of a root, no third, a perfect fourth, no fifth, a minor seventh, and a ninth note of the major scale built on the root.

Stradella bass system allows you to play 9sus4 chords on the accordion combining the root bass with the major chord of its minor 7th degree.

9sus4 chords on Accordion in all keys: