I think that a song, when it works, never mind a piece of long form music, even a song is something that speaks to itself but has a language all of its own, ideally.
On the other hand, the artist has much to do in the realm of color construction, which is so little explored and so obscure, and hardly dates back any farther than to the beginning of Impressionism.
A political leader must keep looking over his shoulder all the time to see if the boys are still there. If they aren't still there, he's no longer a political leader.