musmath
chords
scales
tunings
scale finder
chord finder
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
Chord
notes:
A
C#
E
G
Bb
F#
intervals:
1P
3M
5P
7m
9m
13M
semitones:
4
3
3
3
8
-9
other names:
A13b9
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Chords
with more notes
A13b9#11