|If there is a single unambiguous and undisputed definition of what is "moral", and this definition is associated with institutions promoting certain kind of music, it comes natural: Those who support those institutions and their morals, have higher tendency to listen to the kind of music promoted by those institutions.
Except that I will never agree that there is a single unambiguous and undisputed definition of what is "moral". E.g. I strongly object to a great number of the practices of the Christian religion as being "moral" - even though they themselves hold it up as their "moral".
A second thing: I have for many years been singing in church choirs. Because the churches turns out to capture control over so much resources that they can pay some very good conductors. I listen to a lot of church music, because the Christian churches for centuries have had enough resources to grab the best composers, paying them to make music to support the ideas of the church. That was the way to make a living in earlier days: To work for the church. Today, the way to find a place to sing under a great conductor: Search the church choirs.
I do. Both listening and singing. I do it for the music. Some of the moral, I detest. Some of my true morals would make church people (and maybe a fair share of others) throw up, if I revealed them. I don't. From my music preferences, you would say that I am a highly church moral person. And I'll let you all believe that; I am not revealing my true thoughts. I would strengthen the conclusions of this study. But it would be false.