I've tried to argue before about what Christianity and the arts is not. Much more exciting is the same point made beautifully in its positive aspect, for which I direct you to this speech by super-scholar N.T. Wright (I suggest fast forwarding through the first 12.5 minutes of standard college chapel intro).
Because he actually believes in a new creation, Wright can argue that the job of artists of all kinds is to condition our eyes and ears for that new creation, when the knowledge of God's glory will cover the earth like, as we say in Jersey, "woodah."