I find it kind of funny. There are some churches and denominations who stick to the hymms and organs of old (not bashing on that kind of music, I really do like it) saying that rock and blues and everything is a worldly, ungodly kind of music. I can see that argument for certain kinds of music, but for the most part, rock, blues, gospel, funk etc are styles and should be utilized to their full potential. It seems like certain groups aren't willing to break some Christian ground in music because it is "not of God".
Just so you know, here is my argument for making ALL music not of God. Guess who was in charge of music up in heaven 'till he messed up. Lucifer. Therefore technically, all music is not of God. (just something funny I came up with with my brother).