Abadd9 chord
Ab added ninth
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Play Abadd9 on ukulele at frets 3-3-4-3 in gCEA tuning.
The Abadd9 chord has the formula 1, 3, 5, 9 with notes Ab, C, Eb, Bb
The added ninth chord can be built by taking a major chord and adding the 9th of the scale. It serves a similar purpose to the major chord, with the additional extension for color or harmonizing with other instruments.