Bless you, Kathryn, for your courage!
You know the "tolerant" leftists are busy working on the concept of re-education camps.
Several instrumental versions of Ave Maria exist, which are all considered as "classical music", by classical composers.
There are also several complete masses composed by classical composers.
Normally these are treated as classical music, composed around a theme, and enjoyed because they show either the ability of the composer or the dexterity of the musician. Listening to them is not considered a "religious service" nor is the concert hall
considered to be a church. (When Leonard Bernstein conducted the NY symphony playing one of these masses, he was not presiding at a religious service.)
But if you are to ban all music which has been composed around any religious theme, then you are going to have to ban at least half of the classical body of music, and much that is more modern.
Are we only going to be allowed to have music about the planets?