Question

What does Debussy mean when he said, “Music is free art, gushing forth, and [open] air art, an art boundless as the elements, the wind, the sky, the sea! It must never be shut in and become an academic art?”​

Answer 1

Debussy most likely meant music is a form of art with no limits.

Step-by-step explanation:

Using the words "free art" and "boundless as the elements, the wind, the sky, the sea!" along with mentioning it should never become an academic art, he most likely meant that he sees music as having no limits and that it should never be put into a "box" that stifles its creativity.