Rinaldo: The sound came from a hole. Refers to natural sounds such as wind, water and birds: the sounds of nature are silent, drums and horns ring, and mountains lean against the moon wheel.
Nature is the voice from the sky, and this song should only exist in the sky, and it is rarely heard on the earth.
Teana generally refers to the sounds of nature, wind, birds singing, spring water, and all kinds of sounds that condense the essence of heaven, earth, sun and moon: later generations call poetry "Teana", which is a name for people who enjoy natural interests.
The popular usage now is to describe a good voice.
For example, Celine Dion, Madonna and other singers with top status in the world.