The A Minor 9 Chord is found by locating the 1, b3, 5 , b7, 9 steps of the A Major Scale: A, B, C#, D, E, F#, G# , or the notes A, C, E, G, and B. The “b3” symbol translates to “Flattened 3rd” , which means we simply lower the 3rd step of the A Major Scale (C#) a 1/2 step to a “C”. The “b7” symbol translates to a “Flattened 7th” , which means we simply lower the 7th step of the A Major Scale (G#) a 1/2 step to a “G”.
The notes of the A Minor 9 chord are: A, C, E, G and B
The chord chart below demonstrates how to play the Am9 Chord.
Here is a key that will help you read the chart:
A Minor 9th Guitar Chord Video
The video below will further demonstrate how to play the A Minor 9 Guitar Chord.