I've thought a lot about this lately. The conclusion I came to is that it depends on from where the inspiration comes. One can sing about all things holy and yet live a life apposed to holiness. Another can sing about about everyday life, never mentioning the things of God pointedly, and yet live a life that is set apart to God.
The conclusion I've come to is that to say whether music is evil or Christian requires us to judge an individuals heart. There is fruit that is viewable in some of the more public musicians and this gives us a good indication.
The whole earth is full of the glory of God and yet the earth is not holy. The earth is a creation of our God and yet people will worship that creation. I guess my point is that music is neither evil nor holy. It is a byproduct of someones emotions and thoughts. What we do with this is often up to us. I can listen to "non-Christian" music and think on the beauty of my God. Admittedly, there is some music out there which is of no use for me. Even though it has no words I cannot listen to dance/techno. It leads my mind to places I don't wish it to go.
Someone quoted the "whatsoever things are pure..." verse. I think that's a good verse to use in determining what we listen to. The beauty of classical, while not always expressly "Christian" will lead many to dwell on the beauty of our salvation. For me, listening to deeply emotional music about real life, leads me to dwell on a caring and fiercely devoted Lord.
I think much of the issue is where OUR heart is at. Still, we must be cautious in feeding our minds words and thoughts that are distinctly opposed to our faith. Just as much, we must be cautious in burdening ourselves with a bunch of self-imposed rules that can just as easily take our minds off of our Savior. We can just as easily forsake God in the pursuit of perfection as we can in indulging fleshly appetites. It's all in our motives and focus.
