Today in Slate (the online magazine), you can find Keats's "To Autumn," with a brief headnote by the poet Robert Pinsky. The note suggests (among other observations) that "The fulfillment, the hovering, and the finality of autumn are so vivid in John Keats' 'To Autumn' that readers of English cannot be sure how much our perception of the season comes from this poem."
From that page you can also download a Windows Media audio file of Pinksy reading the poem.
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Coincidentally, Romantic Circles just this hour announced the publication of a new volume in our Praxis series: "Ode on a Grecian Urn": Hypercanonicity and Pedagogy. Edited and introduced by James O'Rourke, the volume contains eleven essays from a distinguished group of scholars focusing on how they teach Keats's "Urn" in courses ranging from introductory literature surveys to graduate seminars.