An issue with music languages is that they are still, metaphorically speaking, in the ASCII world stage (focusing on encoding the patterns of western music).

The "UTF revolution" (being able to express both the rich ancient traditions of other cultures and modern electronic music) is still somewhere in the future.

That push to include less stylized musical forms could be a very creative process. It forces us to reconsider what are the musical primitives but also to express them in practical and intuitive tokens.