open
•
••
•
selected
E
A
D
G
B
E
+
key
tonic:
C
C♯
D
D♯
E
F
F♯
G
G♯
A
A♯
B
scale:
major
minor
augmented
diminished
C
D
E
F
G
A
B
Available triads:
Amin
C
Dmin
Emin
F
G
history
GCEGCE
EBEGBE
src