What role does music play in the fictional world you've created? Is it music as we would understand the term? Are any of your peoples particularly for or against music on religious or other grounds? Can anyone use music to influence the behaviour of others (and, yes, I am thinking about the Pied Piper of Hamelin story!).
We have our own history of great composers in different fields of music so what would your world's equivalent be? Is classical known but rock not? Or is classical the big unknown or only for the elite?