What are the 3 diminished scales?
There are really only 3 diminished scales – C, C#, and D. When we build the scale starting on D# we get the same scale as the C diminished scale, as it is just an inversion of the C diminished scale.
What makes a diminished scale?
The diminished scale is an eight-note scale that is built by picking a tonic note, and then alternating whole steps and half steps from that starting note. Because of that it is also commonly referred to as the whole-half diminished scale. ... The diminished scale is used to solo over diminished 7 (Dim7) chords.