Article in English: Church Latin, also called Ecclesiastical Latin, has been used in Catholic ritual, song, and church pronouncements for many centuries. Its pronunciation has changed in some respects to match modern Italian, which, after all, is a form of Latin filtered through millennia of change. One of the most noticeable differences from Classical Latin is the appearance of these sounds:  If C appears before ae, e, oe, and i, pronounce it ch as in chain (instead of a hard c as in cat). In the same context, G is soft as in gem instead of hard as in goat. SC becomes sh as in sheep instead of sc as in scold. CC becomes tch as in catchy instead of cc as in accord. XC becomes ksh instead of ksk. Church Latin vowels tend to have less difference between the long and short forms than Classical Latin. The exact pronunciation can vary by congregation, so if you follow someone's lead or go with your instincts, you'll probably be fine. Singers especially tend to holding the same sound for a longer or shorter time instead of changing the quality of the vowel. When in doubt, use the following system:  A as in father. E as in red. I or Y as the "ee" in sleep. O as in for (not as in go). U as the "oo" in boot. Unlike Classical Latin, Church Latin pronounces the letter V as it is in English. In Church Latin, these sounds are closer to modern Romance languages:  GN is always pronounced as the "ni" in onion. TI followed by any additional vowel is pronounced as the "tsy" in patsy. Exception: TI is still pronounced "tee" if it is at the start of a word, or if it follows s, x, or t. These two words are pronounced as though the h were a k: nikil and miki. H is silent in all other words. Church Latin still uses the diphthongs AE and OE, as pronounced in Classical Latin. For AU, EI, AU, and EU, make both vowel sounds distinct. If stressed in a song, hold the note on the first vowel sound, and move through the second for a moment at the end. EI is pronounced as a diphthong (one sound) only in the word Hei.

Summary in Indonesian:
Ucapkan huruf konsonan sebelum “ae”, “e”, “oe”, dan “i” dengan halus. Pelajari bunyi huruf-huruf vokal. Ucapkan huruf "v" seperti "v". Pelajari cara pengucapan “gn” dan “ti”. Pelajari cara melafalkan kata “nihil” dan “mihi”. Pisahkan huruf vokal ganda.