1. Classical music refers to the genre that originated in European countries such as Germany, France, Poland, among others, prior to World War II. It encompasses a wide range of forms, including serenades, symphonies, piano compositions, concertos, violin music, and quartets.2. Following World War II, the popular genre of music became "Pop," which includes Jazz, Hip-hop, Rock and Roll, R&B, Nature music, Rap, light music, and more.3. Folk music is a type of music created by a particular group of people over an extended period. Polka and Mazurka are examples of foreign folk music, while Chinese zither music, Chinese flute music, and erhu fiddle music are among the folk music of our country.