From a reader:
I wondered if you might be able to help me, I know you’re busy so please don’t bother yourself if you don’t have a quick answer or resource. I got elected, recruited, uh more like drafted into being choir director twice a month. I can sing very well and read music, but I have no idea what is supposed to be sung. I did some searching, but either I am seriously lacking in the correct search terms or something because I can’t find anything about the rules for choosing appropriate music for Latin Masses. These are low masses, so we generally just have entrance, offertory, communion and exit hymns. Sometimes we sing the Salve Regina after the end of mass prayers. If you know of anywhere I can get this information, I would be so grateful. I just don’t want to mess it up, but I don’t have anyone to ask. I can’t find any "Big Book Of Music Rules" for Latin Mass, so I am somewhat of a loss. I don’t want to just sing songs in Latin, I mostly want to make the experience more beautiful for the congregation. This is very important to me, because the music is what converted me to becoming Catholic, so I feel that it is very important to make sure it is as good as possible. I know a lot of traditional music, but I’m feeling overwhelmed right now. My first Mass to sing, is next Sunday, what a mess. I just found out today.
There is an old phrase: "He who sings, prays twice". This is falsely attributed to St. Augustine of Hippo. I like to amend this to say "He who sings well prays twice."
Liturgical music in Mass is prayer. So, it is good to stick to music for the texts the Church gives us for each day.
Obviously this is going to be a "bring by brick" situation for you, so be patient with yourself and everyone. You can make it all happen, but it will take time.
Perhaps some of you readers can help with your concrete experience.
Perhaps suggestions for this Sunday are in order.