Watch the The Devil's Chord online guitar lesson by TrueFire from Play Acoustic Guitar 6: Lick Vocabulary
The Devil's Chord - Trick 48 is a video guitar lesson presented by Matthieu Brandt and is sourced from 50 Chord Tricks You MUST Know.
Jazzed-up blues progressions often hold a diminished seventh chord in bar six of the progression. This is where the blues nerds can go to town on their altered scales and diminished runs.
Throw this chord trick in as a character study of your fellow band members.