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
Tritone Substitutes
Atonal Harmony - TJPS
Tritone Subs for that Jazzy Sound - Mike's Master Classes
An Introduction to Quartal Harmony: Using Fourth Intervals to
Metal Dünyasının Karanlık Hazinesi : Şeytan Aralığı – SURGE
Blues Piano Tritone Riffs for Maximum Crunch - Piano With Jonny
Interval Series - Tritone with Dom7 Chords Lesson
Modal Harmony in Jazz Composition – Berklee Online Take Note
Formation of tritones (in depth) Second Lesson — Steemit
Chord Substitutions - The Nandi Method
Martin Lohse/Harmony - Wikiversity
Functional Harmony, Part 1