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?
Sort of a State Approved Music List. The Authorities can dig up one of the old lists from the USSR and save the effort of having to make a new one.
And what about the art department and all those pix of church commissioned artwork done by da Vinci, et al?
/s
Bump
How about banning Handel's "Messiah"? Or how about those many (if not most) pieces by Bach that were dedicated to "Gotte"?