What does Nietzsche's southern music express?

In Nietzsche's poems, the music of southern China expresses the will of power and the spirit of alcohol, and examines science from the artist's point of view and art from the perspective of life. Nietzsche thought it was "a book written for insiders, a' music' written for those who were born for music and were deeply attracted by rare artistic experiences from the beginning." 1, a book about music and tragedy, Greeks and Greek music, is essentially a book written for Dionysus's music. The Dionysian factor, even the primitive happiness it feels about pain, is the same as the disharmony in music and the tragic myth.