What IS "Christian music"?

We were talking last night at my small group about this. Our pastor has preached on this subject a few months ago as well. So last night we were addressing the question: Can you take a song, a secular song and sing it as a worship song even though the band/singer is not a "Christian Singer"?

Our pastor was saying that there is no such thing as "Christian music" there are only "Christian lyrics". So if the lyrics are sang with a worshipful heart does that make it a "Christian song"?

A couple of the people were putting together a slide show from the Youth Camp that we have and in the intro they had this background & it had the different names for God popping up randomly around the screen. They were thinking that it would be cool to put a song background (screensaver type image).

They were thinking that the lyrics of the song "The Reason" by Hoobastank would be really cool here's the lyrics:

HOOBASTANK LYRICS

"The Reason"

I'm not a perfect person
There's many things I wish I didn't do
But I continue learning
I never meant to do those things to you
And so I have to say before I go
That I just want you to know

I've found a reason for me
To change who I used to be
A reason to start over new
and the reason is you

I'm sorry that I hurt you
It's something I must live with everyday
And all the pain I put you through
I wish that I could take it all away
And be the one who catches all your tears
Thats why i need you to hear

I've found a reason for me
To change who I used to be
A reason to start over new
and the reason is You [x4]

I'm not a perfect person
I never meant to do those things to you
And so I have to say before I go
That I just want you to know

I've found a reason for me
To change who I used to be
A reason to start over new
and the reason is you

I've found a reason to show
A side of me you didn't know
A reason for all that I do
And the reason is you

Couldn't that song be used in that way? I think that it was an interesting point. There have been a lot of songs that I've heard that aren't "Christian bands" but the lyrics to me mean more.

Well, that's just what I was thinking about.