This "s" sound at the beginning of sings and strain has been repeated. Do you know why? Can you find other instances of this in the poem?
Yes! the poet uses alliteration, the repetition of consonants, to illustrate the nature of the Solitary Reaper. In stanza one, "she" is "single in the field, solitary, singing, sings a melancholy strain" and overflows with "sound." Wordsworth repeats the "s" to paint the image of the woman, alone, singing while she reaps. Remember, reaping is the act of harvesting, many times a metaphor for death. In the last stanza again the "s" is highlighted with her "song," singing" while the poet is "still." The Solitary Reaper's song is one which, once heard, can never be forgotten!
Another reason why he uses alliteration in the poem is because the "s" sounds evoke feelings of peacefulness and serenity. "S" is a calming sound and it definitely adds to the tone of the poem, which is one of peace, serenity, and calm.