Spring arrives in the first line as a fact and ends the poem as a question. That small journey gives Stevenson's lyric its pull. It begins in confident, chiming statements, "Over the land is April, / Over my heart a rose", and finishes with a speaker who is still singing but no longer sure anyone is listening.
The situation is simple. A lover sings across a distance, over "the high, brown mountain," to someone who may or may not hear. The poem never says who the beloved is or why they are apart, so the mountain does the explaining. It stands for whatever lies between the two, and its colour matters. It is brown, not green, so even in April it keeps something bare and wintry. In the first stanza "the sound of singing goes" over it. In the second, "the wind of winter blows" over the same slope. Stevenson repeats the line word for word but changes what crosses it. The setting stays fixed while the season, and the speaker's mood, turns.
The word "over" opens the first three lines and sweeps outward from the landscape to the speaker's own chest to the far horizon. The rose "over my heart" could be a flower worn there or love itself in bloom, and the poem leaves the choice open. In the first stanza, the inner rose matches the outer April. In the second, that harmony cracks: "The snows succeed the rose." The hissing s-sounds almost sound like snowfall, and "succeed" is a cool, administrative verb for something so cold, as though one season were simply taking over an office from another. Even here the speaker cannot keep the beloved out of the sentence. "By highway, love, and byway" slips the word "love" into the middle of a description of roads.
The rhythm helps this feel like a song. The lines are short, mostly three beats with a tumbling start, as in "OVer the HIGH, brown MOUNtain", so they roll along like a tune. Rhyme binds the first stanza: rose with goes, ring with sing. "Mountain" rhymes with itself, an identical rhyme that works like an echo coming back across a valley. In the second stanza, rose pairs with blows. Then the poem does something unexpected and refuses to stop at eight lines. Three extra lines cling to the sound of "spring": "I sound the song of spring, / I throw the flowers of spring. / Do you hear the song of spring?" The stanza overflows, as if the speaker, determined to answer winter, can only keep repeating the one word that defies it.
The verbs shift as well. In the first stanza the singing simply "goes" and the sonnets "ring". Though the poem is not itself a sonnet, the word seems to mean love poems in general, and "ring" gives them a bell-like carry. By the end the speaker is active and almost physical: "I sound," "I throw." Hurling flowers over a mountain is a generous gesture and a slightly hopeless one, since petals cannot cross that distance. Only sound can, and even that is in doubt.
The ending tilts the whole poem. After the burst of assertion come three questions in a row, and the last one inverts the word order, "Hear you the songs of spring?", which sounds older and more pleading than the plain "do you hear" before it. No reply is given. The poem judges its own success by whether the song is heard, and it leaves that unanswered.
That is what makes the poem worth reading closely. On the surface it is a slight, singable piece about April. Underneath, it treats spring as something to be carried and shouted against the weather, not a season that simply happens. Love here is an act of sending out, with no guarantee of receiving. Stevenson builds that tension from very little: one repeated mountain, a handful of plain words, and a stanza that runs past its natural end because the speaker cannot bring himself to stop singing.