The Game-Changing Trick: Tritone Substitution Explained In this video, I dive into the concept of tritone substitution and show you how to apply it to the dominant 7 chords for fresh harmonic possibilities. A "tritone" is an interval of three whole steps or an augmented fourth, making it a powerful tool for replacing standard dominant chords. I break down how tritone substitutions work in a ii-V-I progression and why they share critical tones like the third and seventh with the original chord. P