This fairly recent article (2012) explains the origins of rock music. It is not written by a “wacko” fundamentalist with an ax to grind—the author is a rock musician.
Reading this article (and many others like it) should make clear to any Christian the ungodly origins and nature of this musical style. God demands that we “have no fellowship with the unfruitful works of darkness” (Eph. 5:11), including any such musical styles.
Note: I did not watch any of the videos that are in this article and would recommend strongly that you do not do so either.