Listening to music nonstop would probably do that to anyone. The more you listen, the stronger the melody needs to be in order to evoke the same feeling. Similar thing with drugs.
I disagree with your perspective, most music genuinely should not have life wasted on it. We are at an empath, what say you?
Interesting question. It certainly isn't possible to do so in one's lifetime, but considering the estimate that there are 97 million songs in existence, probably several centuries.