"Congregational singing at low Mass and at other services in the church, not strictly "liturgical" in ceremonial character, has always obtained, more or less, in our churches."
That's very interesting, considering that it directly contradicts William F. Buckley in his book, "Nearer, My God."
Now let's see, who's more credible...hmmm...
H.T. HENRY
The expert in Congregational Singing chosen to write the entry "Singing, Congregational" for the Catholic Encyclopedia is more credible than Buckley.
All the citations within the entry prove it so.