Not about music. About history.
At one type hymns were the "new cart" that the traditional Christians of the time viewed as allowing Satan into the church. They declared that God did not accept this worldly music. They viewed fighting against hymns as are fighting the good fight of faith to preserve it and give no ground to the end.
Then the end came and hymns became acceptable in worship.
Do you not at least see a similarity between that first "worship war" and the one we are speaking of today?
Those who fought so hard against hymns were absolutely convinced that introducing hymns into worship was Satan destroying the church, the church becoming the world.
Anyway, history is interesting. Very often it repeats itself. The "heros" of yesterday become the "villains" of today.
I know this, Jon, history has never fought against an evil such as the "rock beat" that changed this world forever for the negative.
It brought about a separation of families and introduced a spirit of rebellion against God to ways of the world.