In ancient times, information was transmitted by singing, just like the roar of wild animals and birds, instead of word for word now.
Music is not a regular sound. It comes from human understanding of nature, such as things that can be felt by hearing, such as wind passing through mountains and water flowing between mountains. It can bring comfort and happiness to human beings, so human society has formed music and musical instruments after years of accumulation. Man makes musical instruments to imitate the sounds of nature.
Remember, poetry is born from the heart, and only by listening attentively can beauty be produced. Ancient poetry must be accompanied by music, and it must be sung, just like singing now, which will be very touching, instead of reading it out like this.
Everything that can move people's hearts is valuable. If it is valuable, it is naturally worth studying. If we study it, it will naturally have literary connotation. Literariness is actually the connotation and external expression of literature.