Hello HealthAndHappiness. There are many articles online, believers in various countries saying the same thing. Church music has been pumped up to such a degree that it is causing pain and hearing loss to some members. A counter argument is often presented that loud pop or rock music brings people, especially younger people into the church and is needed to make the church 'relevant', or to get people pumped up.
My own opinion is that I think some churches understand the potential pschyosomatic and even psychedelic qualities of music. Extremely loud, sometimes repetitive music, designed to have those effects, often with other sensory manipulative techniques like lowering the lighting. Getting people fired up to lower their inhibitions and mental thought processes, then can come questionable and even false teaching. I think the cranking up of the volume in music can be related to the dumbing down of the biblical content in sermons. Churches that use extreme forms of music aren't often recognized for their strong, expository bible teaching. Renewing the mind or switching it off.
Jesus said: Matthew 13: 45 “
Again, the kingdom of heaven is like a merchant seeking beautiful pearls, 46 who, when he had found one pearl of great price, went and sold all that he had and bought it"
Therefore I personally don't think that pop music is necessary to make a church relevant. When a person finds the Kingdom of God they will be all in, like the merchant in the above parable, gimmicks will not be necessary to get them or keep them in the Kingdom.
God Bless You