Okay kiddo, so a lullaby is a song that someone sings to help a baby or child fall asleep. The old High German lullaby is a very old song that people from a long time ago would sing to their babies. It's in a language that people don't speak anymore, but it sounds really pretty!
The lullaby is about a mother who is talking to her baby. She is telling them about how safe and protected they are while they sleep. She says things like, "The moon stands over the mountains and shines so brightly. It watches over you and keeps you safe." She also talks about how the stars in the sky are like little lights that watch over the baby as they sleep.
The lullaby is sung in a really calming way, with a soft and gentle melody. It's meant to help the baby relax and fall asleep. Even though the language might be different from what we hear now, the sentiment is still the same - a mother's love and protection for her child.