Group One Continued. Enharmonic equivalents. G#dim7, Bdim7, Dim7, Fdim7 or E#dim7. E#dim7 is found in the key of F#minor. The key of F#minor is easier to explain.F#m = F#, G#, A, B, C#, D, E#, F#.
Key signature has three sharps, same as A major, F# top line, C# third space, G# space above the staff.
Primary chords in the key of F#m are F#m(i)=F#, A, C# Bm(iv)=B, D, F#.
C#7(V7)=C#, E#, G#, B Lowered ninth(b9)=D. Raised ninth(#9)=Dx
E#dim7(vii7)=E#, G#, B, D
E#dim7 notes and passing tones E#, [F#], G#, [A], B, [C#], D**b9,[Dx]**#9, E#.
Review. The four vii7 chords in GROUP ONE sound the same, but the passing tones used are slightly different due to their derivation from different keys. Compare and check the difference or perhaps one or two different notes.
G#dim7 notes and passing tones = G#, [A], B, [C], D, [E], F**b9, [Fx]**#9, G#.
Bdim7 notes and passing tones = B, [C], D, [Eb], F, [G], Ab**b9, [A#]**#9, B.
Ddim7 notes and passing tones = D, [Eb], F, [Gb], Ab, [Bb], Cb**b9,[C#]**#9, D.
E#dim7 notes and passing tones E#, [F#], G#, [A], B, [C#], D**b9,[Dx]**#9, E#.
