13.50Notice the shape pattern
Major 9:
root in LH
RH:
3 – 7 – 9
Minor 9:
root in LH
RH:
♭3 – ♭7 – 9
Dominant 13:
root in LH
RH:
♭7 – 3 – 13
That's a much smaller system to memorize than every chord note individually.
Major 9:
root in LH
RH:
3 – 7 – 9
Minor 9:
root in LH
RH:
♭3 – ♭7 – 9
Dominant 13:
root in LH
RH:
♭7 – 3 – 13
That's a much smaller system to memorize than every chord note individually.