The question misrepresents the growth of knowledge in general and evolution in particular. The way evolution works is as follows. Mutation produces variation in genes, which causes variation in phenotypes. Some phenotypes manage to interact with the environment in such a way that genes are copied, others don't. The way this happens is that some of the genes contain useful or explanatory information (knowledge) about the environment. Neither genes nor evolution intends to create any such knowledge but it does so nevertheless. For example, the genes that influence wing development in sparrows instantiate some useful information about how to fly. Genes for sexual traits like peacock feathers instantiate some information about the brains of peahens. However, all knowledge has reach: it solves problems it was not invented to solve. If we understood how sparrow's wings work we might be able to make small robots to go spy on other countries or deliver small parcels or whatever.
At some point in the past, evolution created an adaptation in human beings that had a lot of reach: the ability to create new explanatory knowledge instantiated in our brains and in books, films and so on. As a consequence of this, human beings can create knowledge about new sets of priorities that have nothing to do with genes. We can create any kind of knowledge that seems worthwhile. The only way to find out what is worthwhile is by conjecture and criticism and there always going to be unsolved problems connected with what we find worthwhile. While we don't know why music would be worthwhile but it does seem to be the case that aesthetics, including musical aesthetics, is objectively worthwhile, see:
and "The Beginning of Infinity" by David Deutsch.
Note that none of this can be explained by creationism because creationism doesn't pick out any particular set of properties of the world as being impossible. The way the world would be constituted would be entirely a result of God's whims. So creationism can't rule out that God would make the entire world a giant peach or that he would make Beethoven sound bad to us.