Each act of perception seat on his roots and engender his own "history" and is relativistic in this sense...
But each act of perception could be re-enacted and opened to the revelation of an " absolute" content....
This absolute content is not the relative content of the perception but the awareness of the content and his conscious possible or potential meaning....His "openness"....
Then all perceptions even the more remote or different one could be translated at the right time and linked together...
The human perception of "sound" create music and music is precisely this conscious working translation and communication between cultures and perspectives...
Then relativism is only half of the story.....Like a particular road is half of the journey without the peak of the mountain....
All musical genres or cultures are justified and communicate between one another but some recapitulate conscious moments more easily than others and even integrate all the others more easily...
At the end, music is ONE universal phenomenon transcending and integrating history....
Someone explained that very clearly in the mid last century: Jean Gebser in the "Ever present origin" one of the greatest book ever written in the last hundred years....
https://en.wikipedia.org/wiki/Jean_Gebser «If all is relative, the absolute posit itself,it is the relation»-Lanza Del Vasto
«Then there is a hierarchy in music like in all activities but it is not a hierarchy of power but a hierarchy of integrated and integrating vision»- Anonymus Smith
«At the end there is a "sound" that recapitulate us all»-Anonymus Smith
« By all chance, is it a gong sound?»-Groucho Marx 🤓