musmath
chords
scales
tunings
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chord finder
C
C#
D
D#
E
F
F#
G
G#
A
A#
B
Chord
notes:
B
D#
F##
C#
intervals:
1P
3M
5A
9M
semitones:
4
4
6
-2
other names:
BM#5add9, B+add9
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B9b13