Late at night, birds start singing near a balcony, and the speaker feels something shift. The gloom lifts, and time and dreaming seem to blend into a single current. The speaker suggests that only people who are awake and singing at that hour can understand the "unsung philosophy" it carries.
The poem then turns inward. Shadows scatter and "mend the personae," and the speaker asks whether they are the song or the silence the song fills. That question sits at the center. In this "nightworld," identities blur and shadows erase the differences between people. The last lines offer two possibilities: we are either the song of melancholy or the herald of the light.
The mood is dreamy, reflective, and a little uneasy. The speaker seems moved and curious rather than frightened, caught between sadness and the promise of morning. Summer blooms and ripe fruit add a note of richness, as if the night were full of life, even while it leaves the speaker unsure who they really are.