In the definitions of poetry, three elements of emotion, imagination, and music are discussed. Persian prose texts have always benefited more or less from poetic elements in different eras. In the meantime, given their themes and subjects, Sufi and Mystic works have tended toward more poetic characteristics so that understanding formal semantic subtleties and delicacies of these texts sometimes rested on the analysis of their images and musical influences. Based on this importance, the purpose of the present study is to examine the function of two main poetic elements, namely, imagination and music, of Tazkirat al-Awliyā , one of the most notable mystic prose, to determine its poetic level and quality. The findings of this descriptive-analytical study show that musical influence of this work is more evident and more diverse than imagination. Both elements have a decisive and important function in Attar's prose. Rhyme, pun, oxymoron, and alliteration are among the most prominent examples of inner and spiritual music in Tazkirat al-Awliya often expressed when introducing these topics: mentioning the names of Awliyā (saints of God) and describing their personality and character, explaining Tawheed (monotheism), self-knowledge, death, mystical death and survival, contrast between micro and macro concepts of existence, codes of conduct, selfcriticism, and condemned world. Also, from imagery perspective, Attar more noticeably made use of simile, irony, paradox, symbol, personification, and allusion in introducing and describing characters, moods and conducts of mystics, and quoting them, as well as explaining their revelations and focusing on formalsemantic aspects of the mystics’ names.