the rise of nation-states as defining social and geographic entities increasing geographic and social mobility, with more people moving to cities & the growth of a literate middle class, new technologies dependent on power from fossil fuels (trains, steamships, industrial printing) longer life-spans and rising standards of living enable ideas or values including individualism, imagination. idealization of childhood, families, love, nature, and the past.
Billie Eilish is a very distinctive singer and there is no real exact way to sound like any particular singer. If you really want to sound like someone the best thing to do is just listen to a particular sentence (or lyric) and repeat it over and over again and each time if your heading in the right track you could sound a bit like her. But there is no exact way to do this.
