Three short lines, and almost nothing happens. That is the point. A house sits beside water, the wind is making a kind of music, and night is on its way. The poem simply places us there and asks us to listen.
The speaker never says "I feel peaceful" or "I feel alone," and the poem leaves that open. Still, the details lean toward calm, quiet attention. "Wind music" suggests the speaker is hearing the wind as something shaped and pleasing, perhaps rattling or humming around the house, rather than as noise. The house by the water feels small and sheltered against a big, open landscape.
The last line, "night coming on," adds a gentle hush. It isn't threatening, just slow and certain, like a day closing. The mood is contemplative and a little wistful, the kind of moment when you stop doing things and let the evening happen around you. The short, unpunctuated lines work the same way, giving us room to pause and take in each image.