Persian poetry always had a deep bond with Persian music. Despite the emergence of the songwriting movement, poetry has replaced lyrics in many musical works. Exploiting a descriptive and analytical approach and adopting Lucien Goldmann’s insights, the current article attempts to clarify the role of Persian poetry in Iranian music, examine the music producers’ propensity for classic poetry and free verse, and study the reasons behind these transformations at various periods. Meanwhile, the study will devote its attention to the role of cultural, political, and social factors in the replacement of the lyrics with poetry, and their positive and negative ramifications. The study’s findings indicated on account of its high status in Iranian culture, religious attitude after the Islamic Revolution, anti-Western policies, cultural evolutions, modern advancements, and linguistic and literary resources, the use of classic poetry has been different. The tendency to free verse stems from its socio-political content and symbolic language. The substitution of lyrics with [classic] poetry had positive advantages, such as the audience’s further acquaintance with poetry and literature, the elevation of their literary knowledge and taste, the introduction of poets, and the enhancements of their music’s quality, leaving positive impacts on other musical works and songs.  Also, this replacement had its negative ramifications, including its negative effect on the quality of songs, the strangeness of these musical works with the period of their production, and the modification and integration of poetry.