What is difference between minor arts and the major arts

We can also consider the two words with a different meaning: terms having the same connotation that there is between a 'minor' child and a “major” adult: a minor art would be an art not resulted in training. ... A major art would be a mature art.

Your answer is true : )

The gregorian chant was a major cultural milestone in the middle ages. it was one of the first codified forms of music meant to be played as written, where previously it was difficult to mass-produce and disseminate any music. what's more, these chants were also some of the first examples of musical notation: the notes and bars of today's music sheets are a reflection of centuries of evolution beginning with these chants. it became official throughout the entirety of the catholic church, meaning that nearly all of europe followed this musical notation and styling.