What is the basis for saying rock music is sinful?

It has been suggested to me that some Christians believe that rock music is inherently immoral, and as a result they believe that Christians would do well to avoid the entire genre. For example, several older Christians have told me that statements about the immorality of rock were more common back in the 60s and 70s. Apparently, American evangelist Bob Larson was against rock music, and that he was lampooned for these view by Larry Norman, a musician who wrote rock music with a gospel theme. If this perspective is widespread, are there denominations that are opposed to rock music? Is there a cross-denominational movement that objects to rock music on the grounds that the genre is in some way unholy? I met someone in my previous church who held this view, but I was never able to get a straight answer from her as to why. Was this just a personal perspective, or is this a widespread perspective amongst Christians? If there is an anti-rock music movement amongst Christians, where did it originate? What is the basis for the belief? Are there particular Bible verses or doctrinal stances that underpin the anti-rock stance? In answering the question, note that I'm not interested in debating whether or not rock music is *actually* immoral. I just want to know if / why groups of Christians believe it to be so.