On the Stradella bass system, diminished 7th chords are also minor 6th chords
AKA: C# diminished seventh, C#°, C#dim, C#dim7, C#dim7th, C#dim/6, C#dim(add6)
Green bass pattern: C#dim7(omit5) = C#m6(omit5)
Blue counter bass pattern: C#dim7
Notes:
C#, E, G, B♭
Cdim button plays:
C#, E, B♭ (no G)
Intervals:
R, m3°, dim5°, dim7°
Dim buttons play:
R, m3°, dim7° (no dim5°)
Left hand:
Green bass pattern:
C#dim7(omit5), same as C#m6(omit5)
C# + C#dim
(D♭ + D♭dim)
Blue counter bass pattern: C#dim7
C# + Gdim
Fingering:
4 + 2