Friday, January 21, 2011

The Devil in Music - we can't live without it!

A musical interval that spans three whole tones is called a tritone (three + tone).  The interval created by three whole tones is an augmented 4th.  It may also be recognized as a diminished 5th.  Whatever the name, this interval is dissonant in the extreme.  Church practice during the Middle Ages banned the use of this dissonant interval.  They called it “diabolus in musica”…. The devil in music.

But those church leaders were tilting at windmills.  The tritone appears naturally in music.  It can be found on the diatonic scale between the 4th and 7th degrees.  On a G-scale the tritone appears between C and F#.  On a D-scale the tritone appears between the G and the C#.