When creating blue-and-white chinese porcelain, the paint made of cobalt oxide is applied after the object is glazed and fired

In what ways were berlin's songs expressions of continuity in american culture? in what ways did they signify change in american culture?

This is just a little thing i just did for fun! hope you enjoy! a: ~what would you first grand if your house was onfire? b: ~what do you first notice on a person? c: ~ what are some challenges you think the next generation will face? d: ~what is the most embarrassing moment in life? e: ~what is your favorite artists? //music//f: ~what are some bad habits you can't stop doing? , but you know you need to stop on them.i really hope you had fun doing this, or not doesn't matter, but if you want more from me contact me! bye now//i can't wait to see some results//ㅋㅋㅋㅋㅋ나를 따라라! ^^(i'm going to put this under arts, even though it's not, so yeah)

I’m a paragraph of no less than 125 words, explain the single most important factor involved in advancing american classical music in the twentieth century.