Watch the Diminished Scale online guitar lesson by Robert Renman from Blues Booster
The Dim scale is a hip scale! You can do so much with it, but let's examine it's construction and then I'll show you a few ways you can use it. It's a symmetrical scale. You can view it two ways, either half-step/whole-step, or whole-step/half-step. There are many ways you can use the Dim scale. One approach I often use is to sometimes play the A dim scale over the IV chord. So with this approach, I start with a whole-step from A. When the chord is D7, the scale leads to a half-step/whole-step design, from a D7 perspective, whereas for the A minor chord, the design was the opposite. In general, you can use the whole-step/half-step approach over Minor chords, and the half-step/whole-step approach over Dominant chords. Here are two finger patterns I often use when playing the Dim scale. They are convenient and easy for me to play. I guess we can say the Dim scale is a different beast than the typical modes or blues scale, but it's probably my favourite scale. It provides the outside/inside sounding approach automatically, and once you get the finger patterns in your head, it's tons of fun.