Why not use the liturgical music the Church wants: Gregorian chant?
CWN – September 24, 2012
Jeffrey Tucker argues in a Crisis essay that parish music directors have been given too much control over the liturgy. When they try to match the music of each Sunday Mass to the Scripture readings, he says, musicians bend the liturgy to their own understanding.
The proper approach, Tucker argues–citing the teaching of Vatican II–is to encourage the use of Gregorian chant. The Mass should not be accompanied by hymns [but by the propers in the Graduale Romanum], he says; the entire liturgy should be sung.
Additional sources for this story: Catholic Music: It’s Time to Stop Making Stuff Up (Crisis) www.crisismagazine.com/2012/catholic-music-its-time-to-stop-making-stuff-up

Why? I’ll tell you why. Satan hates Gregorian Chant.