The thread is: What do space aliens think of modern music?
so, according to the title, I'd say

I'd suppose, if they visited our planet 1000 years ago, then 150 years ago, and, at last, now (each time having listening to the inhabitants music), then they could say:
While our 1st visit they were still wild, 2nd time they were civilized, and 3d time they're becoming wild again