Preguntas sobre ejemplos de oraciones con, y la definición y uso de "Gagaku"

A:
Gagaku, which has a long history of over a thousand years, is one of the oldest *forms of classical* music in the world.

• all music is essentially artistic, so I changed it to "classical" since gagaku is a form of classical music.


Gagaku was perfected, for the most part, in the 10th century on the basis, or under the influence, of the music of the Asian continent.

• on the basis "of" + under the influence "of"
= on the basis, or under the influence, "of" ○○