In the spring of 1818 a nightingale had built her nest near my house. Keats felt a tranquil and continual joy in her song; and one morning he took his chair from the breakfast-table to the grass-plot under the plum-tree, where he sat for two or three hours. When he came into the house, I perceived he had some scraps of paper in his hand, and these he was quietly thrusting behind the books. On inquiry, I found those scraps, four or five in number, contained his poetic feeling on the song of our nightingale. The writing was not well legible; and it was difficult to arrange the stanzas on so many scraps. With his assistance I succeeded, and this was his ‘Ode to a Nightingale’, a poem which has been the delight of every one.
http://www.rc.umd.edu/praxis/grecianurn/contributorsessays/grecianurnstillinger.html
