Tritone, in music, the interval encompassed by three consecutive whole steps, as for instance the distance from F to B (the whole steps F–G, G–A, and A–B). In semitone notation, the tritone is composed of six semitones; thus it divides the octave symmetrically in equal halves. In musical notation
The Tritone Interval: A Guide To The Devil's Interval
Tritone - Wikipedia
Is the augmented sixth chord just a tritone sub for V7/V?
tritone substitution - Jens Larsen
The tritone: The sound of the devil's interval and unlocking how
Chromatic Dissonance: Chord Formation Using the Tritone - Hear
Theoretical framework
Tritone Subs for that Jazzy Sound - Mike's Master Classes
Harmony/First Inversions - Wikiversity
Tritone Substitution Tutorial What Is Tritone Substitution?
Chord Substitutions - The Nandi Method
What is Tritone Substitution?
Tritone Chord Substitution
Interval Series - Tritone with Dom7 Chords Lesson
What is a tritone and why was it nicknamed the devil's interval