What is the tritone? The fear of church music

How Did the Tritone Get Such a Devilish Reputation?

The Myth of the Medieval Tritone Ban

Why the Tritone = The DEVIL in Music – Professional Composers

Notes from the Staff

The tritone: The sound of the devil's interval and unlocking how

A Brief History of the Devil's Tritone

Black Sabbath: Fear the reaper

The 'Devilish' Mathematics of Heavy Metal Chords

Beneath the cross of Jesus — Hymnology Archive

The 'Devilish' Mathematics of Heavy Metal Chords

The Devil's Notes: Tritone Interval in Black Sabbath's Black

The Devil's Interval: Tritone