Notes are symbols placed on lines and spaces representing high and low sounds called what?

First to answer will be the brainliest i need the answer asap

With the downplay of emotion in classical music, music from this period doesn't usually exhibit the traits necessary for enduring quality.

How is pop music related to popular music? what theme does pop music typically discuss in the lyrics? why do you think this theme relates so much to lots of different types of listeners? describe one pop song that uses this theme. what is disco? when did it develop, and what characteristics set it apart from other genres of popular music? what was the british invasion? which famous group was a part of this movement? what impact did the group have on pop music? what is a boy band? what are some characteristics of a boy band?