For learners of Japanese (and fans of immersive audio), there is a "Golden Snitch" of resources hidden in plain sight:

Actually, no. That is precisely the point.

Put on your noise-cancelling headphones (or your Extendable Ears), hit play, and listen closely. You might just hear Dumbledore whisper: "Ittoku? Erisu no Kagami da. (Itto k? Erisu no Kagami da.)"