Topmusicanswers
What is a tritone substitution in music?
A tritone substitution is the substitution of one dominant seventh chord (possibly altered or extended) with another that is three whole steps (a tritone) from the original chord.
What is a tritone progression?
This is an example of what will be called the tritone progression: an immediate succession of two major or minor triads whose roots are a tritone apart. A major tritone progression—hereafter, MTTP—is a tritone progression between two major triads.
