A9 chord
A dominant ninth
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3
5
7
10
The A9 chord has the intervals I, II, III, vii with notes A, B, C#, G
Matching Scales: A Mixolydian A Hindu A Arabic B Minor B Hindu B Arabic C# Enigmatic C# Locrian C# Arabic G Lydian
The dominant ninth chord is mostly used in funk, blues and some rock music. It is usually played without the 5th on the ukulele.