In the process of writing, the author of this book abandons obscure technical terms and theoretical analysis, and does not vent his passion outside the court, regardless of the reader's feelings. Instead, we treat readers as friends we have known for many years and talk like chatting. Let you walk into operas, ballets and musicals with ease and pleasure, learn about their brief development history, representative figures, outstanding works, their musical characteristics, cultural connotations and artistic charm at home and abroad, and enjoy a unique cultural and artistic feast with you happily.