Vesper is pretty. It is the Latin word for evening.
Kyrie is encroaching on ridiculous, not only because most people who weren't Catholic or in a choir would pronounce it KY-ree instead of KEE-ree-eh, but also because it is a word which is said to invoke the attention of God in Greek, so its use for a child might even be considered a little disrespectful, or at least extremely lofty.