A "sub genre" is essentially a classification of something within the genre it has already been classified in. For example hip hop might be a genre of music and a sub genre might be electronic hip hop. Electronic hip hop is another level of specificity to describe a musical genre, beyond the larger genre which is hip hop. This same method could be applied to many artistic concepts and classifications more generally.
Answer:
really don't know because you have only link and I have network problem
They would move diagonally
Answer: Vienna
Explanation:
Haydn, Mozart, and Beethoven were active in Vienna, a bustling center for European music at the time. It was the fourth largest city in Europe at the time and had a population of almost 250,000.