I've often said that what makes the music issue the most difficult is that the Bible doesn't come with a play button, so we can't push play to find the kind of music that God wanted. I've decided I'm wrong on that because of this post by Scott Aniol. There was enough instruction or information in the Bible to be the equivalent of play. See for yourself. Also notice that he provides a contrast with the wrong music in biblical times.
By the way, I think there are enough biblical principles for us to discern between wrong and right. However, it goes further than that as exemplified in the Aniol post that I linked to.