music art film review – REDEFINE magazine

Experimental music refers, in the English-language literature, to a compositional tradition which arose in the mid-20th century, applied particularly in North America to music composed in such a way that its outcome is unforeseeable. Its most famous and influential exponent was John Cage.

Some uses of “experimental” describe music that:
     [1]   Lies within specific genres but pushes against their boundaries and definitions;
     [2]   Hybridizes disparate musical styles;
     [3]   Incorporates unorthodox, new, or distinct components;
     [4]   Incorporates unorthodox, new, or distinct methods (example: musique concrète;
     [5]   Departs from traditional norms.
(Wikipedia)