1. Classical music doesn't regard to all types of music, only classical tunes. World music regards to every type of music in the nation.
2. It was important because music was a major part of life in the Ancient Greece. The people of Ancient Greece thought of it as a gift. It was used for religion, relaxation, and was just the essence of life.
3. Pop music is a bit edgy, and very hype at the same time. A downside could be regarded to how some music in this style have foul language, and that it's very loud, making it not for everyone.
