Step 3: So this means that across the keyboard, there are only three different chord shapes you need to know to play all 12 dim7 chords. Shape one: C-D#-F#-A. Shape two: C#-E-G-A# and Shape three: D-F ...

As with any mode, the most colourful sounding intervals are the character notes. In the case of the Locrian mode, lean into the minor 2nd and diminished 5th, and, to a lesser extent, the minor 3rd ...