The poem creates a sense of wonder and mystery by describing the night as a time of secrets and hidden meanings. The speaker's questions about who is listening and what they might be thinking suggest that there is something deeper and more significant to the sounds of the night than meets the eye.
The poem also uses imagery and symbolism to create a vivid and memorable picture of the night. The "children of the night" could be interpreted as various things, such as animals, insects, or even the stars and planets. The "music" they make could be the sounds of their movements or the way they interact with each other. The "listener" could be the speaker, the reader, or even a personified representation of the night itself.
Overall, the poem "Listen to them" is a thought-provoking and evocative piece of writing that invites the reader to consider the hidden mysteries and meanings of the night.