What is the technical name of a Japanese sacrifice song and dance in Kurosawa's film Shadow Warrior?

There are three traditional Japanese musicals-Noko (のぅ), Mad Talk (きょぅげん) and Lewen (ぶんらく).) Kurosawa's. It should be an old saying, and it has a tone, but I don't understand it. Generally speaking, it belongs to the drama. Later, Nobunaga, after learning the news of Takeda Shingen's death, danced wildly and said, "Life has been alive for 50 years, and the world is in an instant. Life is like Conan's dream, and the illusion will be exhausted! " This also belongs to the performance style of Nengju.