Tritone, Interval, Chord & Harmony

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

How to Use Tritone Substitute Chords — ”My Ideal” - Piano String Theory

The Tritone Substituion using Interval Theory

LYDIAN: The Mystic TriTone Mode - by Jay McNeill

Tritone Resolution With Guitar Chords Diagrams

Tritone - Wikipedia

Chord Substitutions - The Nandi Method

Tritone, Interval, Chord & Harmony

What is a Tritone? Why They Call it the Devil's Interval

Theoretical framework

Tritone - Music theory

The Devil's Interval: Tritone

Guitar Lesson: 4-Note Quartal Harmony Chords