My music director and I are going to undertake a new project: we are considering what should be the 10-12 songs that we think would be most beneficial to have the members of both parishes learn, and make their own, over the next year. The idea is that Mass is, like it or not, the best venue for doing some teaching and formation, and if there are pieces of music that should be part of our parishioners' repetoire, that will happen not by using a particular hymn one time, now and then.
So, what would you suggest? Of course, you don't know what my two parishes' members already know.
I'll start with "Let All Mortal Flesh Keep Silence."
What would you add?