Philosophers stone
Prisoner of askaban
Goblet of fire
Order of the Phoenix
Deathly hallows
Chamber of secrets
Half blood Prince
Answer:
I don’t understand I’m sorry.
Explanation:
C. The number of waves in a certain amount of time
Answer: 20th century there was a large increase in the variety of music that people had access to,Sound recording was also a major influence on the development of popular music genres, because it enabled recordings of songs and bands to be inexpensively and widely distributed nationwide or even, for some artists, worldwide.
for more ex go here
https://www.classicfm.com/discover-music/periods-genres/modern/
