I understand the long history of organ music at Catholic Mass. Some organs are quite impressive in sound and appearance. Organ music goes quite beautifully at particular times. Generally, simplified music for average singers is more spiritually beneficial for all. I like to sing the Holy, Holy, Holy and hear myself and others around me instead of a big booming organ and/or choir.
If you are an organist at church, have you ever had the delight of hearing a young child near you try to sing the Our Father with everyone? Probably not. Probably not many have that pleasure these days because of the domination of instrument, choir or individuals.
Given a chance, children will sing/pray too! Their voice is most precious of all! Little ones generally are not singing to the beat of a church choir and organ. Take a look.

These are the ones we need to encourage to join us in song. We should sing at a level even a child feels welcome. Music should be encompassing at all levels.
In our city, it’s not likely. A deseg lawsuit in the 1980s all but destroyed the arts in the public schools. The children in public schools in our city have a half-hour of chorus per week.
The private schools, including the the Catholic schools, aren’t much better. There is one full-time music teacher for all of the Catholic parish schools in our city. The other schools have a part-time music teacher.
What this means is that for the last 20 years, children in our city have not been taught to sing. So they don’t.
I’ve accompanied children’s choirs, both secular and church, under excellent directors for over 50 years. What I have seen is that children sing best when the accompaniment is done correctly, and when they are taught to sing correctly by a good director.
Why give them junk? Why allow them to sing badly, and excuse it by saying, “How sweet the little children sound as they meander around the melody and the time signature.” Nonsense.
If a child can read print, they can learn to read music. I’ve seen children as young as 4 and 5 who can read music. So a school-aged child should be reading the notes in the hymnal and singing along with the correct melody in the correct time signature, and following the rhythm as much as possible (sometimes rhythms can be tricky to sight-read.)
When an accompanist holds back and plays softly, the little children hold back and sing softly because they aren’t being “supported” by the accompaniment. (Grown-ups do the same thing, or they don’t sing at all.)
I frankly would like to hear, in the Catholic churches, little children with eyes wide with excitement upon hearing a “full organ” on the hymns that call for a full organ (e.g., Joyful Joyful, We Adore Thee), and singing with all their hearts and with full voices! I would like to hear little children sighing with delight when the registration in each hymns verse changes in order to “interpret” the verse and helps the congregation to more fully understand and appreciate the hymns.
That’s how I play the organ. If it’s wrong, well…no one has stopped me yet.