As a movement, environmental art emerged in the 1960s when famous individuals such as Nils Udo, Jean-Max Albert and Piotr Kowalski paved the way for this form of art expression. They have been continuously creating environment-related work since then thus spreading the ideas of environmental art.
If there were no copyright laws, you would not be able to protect your music after releasing it. People could take parts, or even your entire song and claim it as their own, and you would have no legal bounds or actions against the plagiarism of your work.