What is beethoven's most famous piece

In areas where even the experts disagree; everyone has a right to his own opinion. i mean if answers aren’t given just like in lots of things; then it has to be just anyone’s opinion. is this dualism multiplicity relativism or commitment

What is the difference between how fauvists and cubists use color in their art

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.