Why are tritones bad

Just like composers-in-training are dissuaded from writing parallel fifths, tritones were avoided because they didn't fit neatly in the rules of good composition. However, plenty of Medieval and Renaissance composers, like Perotin and Gesualdo, were able to use the tritone to convincing effect.

1. When was the tritone banned?
2. Why were augmented fourths banned?
3. What is the tritone of C?

When was the tritone banned?

But you [could] read into that a theological ban in the guise of a technical ban." Pryer notes, too, that the tritone “was recognized to be a problem in music right back to the 9th Century [and] a natural consequence, and so they banned it [and] had rules for getting around it ...

Why were augmented fourths banned?

This interval was banned from church music because of its sound but is heavily used in death metal music. It is very hard to sing unless the vocalist employs a false chord technique, also known as a scream or a growl which is often used in death metal music.

What is the tritone of C?

For instance, in the C major diatonic scale (C–D–E–F–G–A–B–...), the only tritone is from F to B. It is a tritone because F–G, G–A, and A–B are three adjacent whole tones. ... For instance, in the C major diatonic scale, the only d5 is from B to F. It is a fifth because the notes from B to F are five (B, C, D, E, F).