Could your question be properly rephrased to: Did God create all the songs, or did he give us the ability to create them as a way of expressing our free will?
I think that reverses the order of things.
Songs are not meant to express free will; free will allows us to express songs.
Misused music doesn't dampen our free will but poorly used free will makes for crappy music.
Beauty is the first order of your creation. You were meant for Beauty long before you ever had an inkling about what it meant to be Obedient.