In Adam Neely’s new video, he responds to a question about how “the major sixth was illegal in the Renaissance.” This isn’t quite true, they liked major sixths fine in the Renaissance, but it is true that medieval theorists considered them to be dissonant.
Adam quotes an anonymous medieval music theorist who called the sixth a “vile and loathsome discord.” Another 13th century theorist, Johannes de Garlandia, had a more nuanced take; he defined the major sixth as an “imperfect dissonance”, explaining that a dissonance is imperfect “when two voices are joined so that by audition although they can to some extent match, nevertheless they do not concord.” This is weird! If you play C and the A above it on a piano or guitar, they will sound perfectly fine together, so what the heck are these medieval people talking about?
Adam attributes the idea that the sixth is dissonant to the arbitrary and ever-changing nature of musical aesthetic conventions. He also mentions changes in tuning systems, but brushes quickly past that as an explanation. I disagree about that; while cultural conventions are the major factor, I also think we shouldn’t discount tuning as a basis for those conventions. As 12tone likes to say: Fight me, Adam Neely! (No, don’t fight me, I like Adam, I was in one of his videos, he wrote the foreword to our book, he is good people.)
Continue reading “Why did 13th century Europeans think that major sixths were dissonant?”
