What don't you buy?
>Music follows rules, rules that we all grew up internalizing. There's no "universal music", just music who's rules you are familiar with. Tweak those rules just enough and in the right way and you are innovative (see: The Beatles). Tweak them too much and you are simply avant garde (see: Captain Beefheart).
I can enjoy music who's rules I am not familiar with. I don't need to know the rules to enjoy tonal and rythmic arrangements.
> That means that music is without question a social construction
That means it's culturally specific, NOT a social construction.
> It's very possible Bowie could have been too avant garde or too much of an outsider, but what he excelled at was tweaking the establishment just enough (both musically and performance-wise) to find a huge audience whilst still being "outside" the mainstream.
Which is perhaps the point I am trying to make. Within a specific culture, his work (not just his music) had a broad appeal that helped people deal with the human condition. However it was achieved, the world is a better place for it.