You can substitude a diminished chord over a Dominant chord, will give you the b9 sound...so you can base the diminished on any of the following chord tones"" b9, 3, 5, b7 (since they are all the same, ie spells out the diminished chord)
In this eg
Key = F7
Root = 5th string
Position = 8th fret
CAGED = A Shape
so you can think of it as...Gb dim, Adim, C dim or Ebdim
great for going from an altered dominant to a minor I key...or just to spice up a normal mii V7 Imaj
Good stuff. The b9 of the diminished substitution chord in terms of the overall key is a #5. I have been playing around with the bebop major scale which adds this #5 to the major scale SPECIFICALLY for the reason of substituting my V chord with a #V dim7 (F7 and Gb dim). And it IS great because, like you said, you can "base the diminished on any of the following chord tones"" b9, 3, 5, b7 ", or in terms of the key- play a dim7 on the 7, 2, 4, or #5 degrees (to sub for you V chord). SICKKKK.
BlikeNave 1 year ago