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9/11 Chords

Dominant seventh ninth eleventh chords (9/11) consist of a root, a major third, a perfect fifth, a minor seventh, a ninth, and an eleventh note of the major scale built on the root.

Stradella bass system allows you to play 9/11 chords on the accordion combining the root bass with the major chord of its minor 7th degree.

9/11 chords on Accordion in all keys: