One of the best responses I’ve ever read to handle the “are they a Christian band?” false dichotomy. Here’s just a taste; go read the whole thing (it’s short).
None of these songs has been born again, and to that end there is no such thing as Christian music. No. Christ didn’t come and die for my songs, he came for me. Yes. My songs are a part of my life. But judging from scripture I can only conclude that our God is much more interested in how I treat the poor and the broken and the hungry than the personal pronouns I use when I sing. I am a believer. Many of these songs talk about this belief. An obligation to say this or do that does not sound like the glorious freedom that Christ died to afford me.
I do have an obligation, however, a debt that cannot be settled by my lyrical decisions. My life will be judged by my obedience, not my ability to confine my lyrics to this box or that.