James 4:1 From whence come wars and fightings among you? come they not hence, even of your lusts that war in your members?
Contemporary religious music, especially of the rock genre, appeals to the lusts that war in our members.
A good example is when Moses came down from the mountain after receiving the Ten Commandments, and they were worshiping a golden calf.
How did the music sound?
Exodus 32:17 And when Joshua heard the noise of the people as they shouted, he said unto Moses, There is a noise of war in the camp.
18 And he said, It is not the voice of them that shout for mastery, neither is it the voice of them that cry for being overcome: but the noise of them that sing do I hear.
19 And it came to pass, as soon as he came nigh unto the camp, that he saw the calf, and the dancing: and Moses' anger waxed hot, and he cast the tables out of his hands, and brake them beneath the mount.