Abstract: This stylistic analysis of the poem “Ode to a Nightingale” by John Keats who was acknowledged to be the romantic of all romantics, reveals his unprecedented style of writing poetry. The conception of negative capability and the wholesome concept of exquisiteness are the idiosyncratic characteristics of Keats poetry, which distinguish him from his contemporary poets. In this analysis, specifically, main stylistic levels are discussed and accordingly stylistic devices are extracted and explained to analyze this spectacular poem of the renowned and beloved poet, which had made it a part of Pakistani syllabus because of its charismatic and hypnotic impression. To this end, the corpus of the poem has been processed through various softwares for stylistic analysis of corpora and the results have been discussed in this analysis so that it could be helpful as pedagogical implications in applied linguistics and productive for comprehension of stylistic devices for preliminary learners. Moreover, the usage of various softwares for analyzing a corpus can be learnt through this study.