Does music create boundaries?

I prefer the idea that music was how oral communication developed among early peoples and there are a range of bonding aspects when people share music through singing and dancing that are useful to exploit in classrooms, for example.

Susan Rogers, a recording engineer turned academic, once said to me that the future of music lies in timbre, which is where the abstract notion of notes becomes so much more engaging through the inflections of instruments and the memories they create and prompt.