I direct your attention to the NLM which has posted an interesting entry taking to task the "The August/September issue of Pastoral Music, published by the National Association of Pastoral Musicians, is dedicated to liturgical ensembles. The pictures of musicians in various parish settings tell the story."
After Pastoral Music exalts photos of ghastly things, they print an "op-ed sized article called "Interior As Well As Exterior" by….Pius XII! It’s an excerpt from Mediator Dei (1947)".
You should attend to how the NLM piece examines what Pastoral Music does with Pius XII, in light of what Pius actually said and what Pastoral Music actually promotes.