The Question and Answer section for Christopher Marlowe’s Poems is a great resource to ask questions, find answers, and discuss the novel.
Which poem are you referring to?
The most common sound device is alliteration. In most lines (which are rather short) he uses two words which alliterate - "Come live with me and be my love," "melodious birds sing madrigals," "The shepherd swains shall...
The shepherd is addressing his the lady he wishes to accept his advances.