The literary device that is used in these lines from "Music, When Soft Voices Die (To--)" by Percy Shelley is: Alliteration.
Alliteration is a literary device in which certain letters in a group of closely grouped words are repeated.
Alliteration is often used for the purpose of emphasis and to create certain effects that are felt by the reader.
In the excerpt provided, we find alliteration being used in the repetition of the letter 's'.
Learn more about alliteration here:
https://brainly.com/question/536028
