Answer:
Wherever the ends of a continuous line meet, a shape is formed. Geometric shapes such as circles, triangles or squares have perfect, uniform measurements and don't often appear in nature. Organic shapes are associated with things from the natural world, like plants and animals.
Answer:
Art, in my opinion, is just as vital as other subjects. This may seem obvious, but art allow kids to express themselves more freely than other subjects such as arithmetic. It aids in the development of motor skills, visual learning, decision-making, and other abilities.
Brass. Trumpets, trombones, French horns, tubas, and baritones all fall under the brass category and all require air to be blown through them.
I believe John Cage is linked with aleatoric music.
Hope I helped! :)