This study conducts a stylo-linguistic analysis of Niyi Osundare's poem "The Rainsong," examining the language, form, and structure used to convey meaning and impact. Through a detailed analysis of graphological, phonological, syntactic, and lexico-semantic features, the study reveals the poet's deliberate choices in crafting a powerful and impactful work of poetry. It highlights the use of repetition, personification, imagery, and defamiliarization to create a sense of urgency, hope, and optimism, demonstrating how the poet's use of language and form shapes our understanding of the world. Employing Halliday's Systemic Functional Language as its theoretical underpinning and adopting the methodology of close reading and text analysis, this study contributes to the field of literary analysis. It demonstrates the value of stylo-linguistic analysis in uncovering the intricacies of poetic language and informing teaching and learning practices to better appreciate the complexities of poetry.