"I will say at once, quite firmly, that the best grounding for education is the Latin grammar. I say... even a rudimentary knowledge of Latin cuts down the labor and pains of learning almost any other subject by at least 50 percent." -Dorothy Sayers
This Wikipedia article lists a wealth of contemporary, classical, and ecclesiastical songs in Latin. I've heard only a fraction of them, but of those I know, Qntal is the best.
