What's the difference between classical music and modern music?

Classical music is classical music left over from ancient times. Pop music refers to instrumental music and songs with short structure, popular content, lively form and sincere emotion, which are widely sung or appreciated. Pop music is popular music now. * * * The same point is that they are all music, but the difference is that classical music is the most beautiful music after hundreds of years of history. The so-called "gold can only be seen when the yellow sand is exhausted", while pop music is generally forgotten by people in a few years.