"A non-standard dialect is as valid communication system as the standard"

Previous Quote

Music is a universal language insofar as you don't need to know anything else about a musician that you are playing with other than that they can play music. It doesn't matter what their music is, you can find something that you can play together, with what their culture is. The dialect part of it comes into play, but nothing like the differentiation that language sets up, for example.

— Jerry Garcia