Some thoughts from Proverbs 28.
Webster’s definition of rock-and-roll: "a style of popular music marked by heavily accented beat and a simple repetition phrase structure". (Sounds like some church music today.)
(Verse 7) "A companion of riotous men is a shame to his father". Since some rock music promotes those who disrespect authority, it can be a groundwork of riotous men. Therefore, we should be careful how we use it. As with anything that requires caution with its use, perhaps there are times we should not even have it around. How many rock-and-roll concerts are there where the Star, every member of the band, the promoters and all the audience have a good walk with God? Even then there should only seasons of rock-and-roll; not rock-and-roll all the time. We should avoid riotous and men and activity.
What is a sample of some of the people at secular rock-and-roll concerts? Loud beer drinkers, sensual dancers, woman that dress to excite lust, men who look for such women, men who exude dominance and violence, litterers, people who can't be quiet and listen, people who think authorities (police, teachers, parents, etc.) are "them", drug users? The beat raises emotional excitement, the loudness numbs the mind; if we add words that veer from God’s word, we could have an irrational mob.
(Verse 9) To want the rock-and-roll, to the point of turning the ear away from the law will isolate us from God. Conversely, to the so enamored of grace (unmerited favor) to think, "rules are not important" is to turn away from the law. This can isolate us from God.
(Verse 10) There are some that cause the righteous to go aside into an evil way. We must be careful of rock-and-roll for that very reason. Although rock-and-roll seems to have originated in the world, not the church, much of “contemporary Christian music” is rock-and-roll based.
We must be diligent to keep in the godly way.