Lyric discussion by Elimination 

"Diabulus in Musica", or the Tritone, is a musical interval that spans three whole tones or six semitones. The two most basic types of tritone are the augmented fourth and the diminished fifth. Two tritones add up to 6 whole tones (or 12 semitones), usually a perfect octave.

One of the two strong dissonances in the diatonic scale, it was called diabulus in musica ("the Devil's interval") by some from the early music era to the baroque period. It was exploited heavily in the Romantic period as an interval of modulation for its ability to evoke a strong reaction by entering the key least related (retaining only two common tones, the least possible) to what occurs previous.

Right, so there's some music theory (and history) for you all. Clearly, Txus Di Fellatio is a well educated man.

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