We have to understand the fundamental differences in the structure of between the Roman Catholic Church and the Protestant Church.
The RCC is based on tradition and that goes back to the point where the Church IS the power. In a nutshell, it is a class system. God speaks to those He has chosen to run the church and they tell their congregations what He has said. This system stems back to the priest class (Levities) of the Israelites.
Protestants believe that the power lies in God's Word and that all mankind can receive it. This belief lends to a much more open concept of worship as well a more freedom to express love for God. There are degrees of separation within the Protestant movement concerning how freely one can take God's Word. The denominational divides are based on these interpretations. Each denomination is based on a distinct philosophy or interpretation of what the founder(s) believed to be the basis of Truth.
The real TRUTH is that one's faith is found in the connection that one has with God personally and that it is this personal relationship with God that will pull you through regardless of your religious affiliation.
Contemporary music frightens uber traditionalists because it addresses God's love. This is not the traditional way we see God in our Hymnals. If you look at our traditional hymns God and Christ are spoken of with reverence and generally in a very manly, or masculine way. Songs speak of the Blood or soldiering. Trusting and obeying... It is all geared to a society to which the church maintained a strict control over the congregation.
We are moving away from that today. People want to hear how God is relevant to there lives. That means that our Scripture lessons AND our music has to sometimes reflect what is going on in there day to day. That is hard to express sometimes with Onward Christian Soldier.
I respect the Pope's academic intellect. He is sequestered behind palace walls surrounded by other academic, religious old men. He is not really in touch with the world around him and that makes what he says about today's music pointless. He does not have a finger on the pulse of the world because he does not participate in the world. I imagine that some of his lowest priests in the ghetto districts could instruct him on the benefits of making the message relevant. He probably would never listen. That is the price that one pays when one climbs up top a tall pedestal and then people take away the ladder... You can never climb down to the real people anymore... You just have to wait until God knocks you off.
Every way of man is right in his own eyes: but the Lord pondereth the hearts. Proverbs 21:2