In John Keat's "Ode to a Nightingale" the narrator goes from first hearing the bird and
realizing its presence, thinking about how serene its life must be, to chasing away the bird for fear it may die alongside him. In the first stanza Keats talks of how he feels once he recollects his emotions and physical state of being. He speaks of his heart aches and how he compares his present state to a situation of being under the influence of drugs. Then, seemingly out of nowhere, he hears the nightingale's summery song. This is what inspires the entire piece.
When the narrator first talks of the bird, he elaborates upon it's soft melodic song. The author longs for a taste of the revelry which is encased in the nightingale's melody. In stanza two he says, "O, for a draught of vintage! That hath been cooled a long age in the deep-delved earth, tasting of flora and the country green," This quote tells us that he yearns for the feeling of happiness and warmth that he believes to be locked within the countryside. This, in turn, gives the reader the impression that the author may have been bed-ridden for a long period of time, or perhaps was very sick and so was not allowed out of doors.
The next stanza speaks of what the narrator might do if he could fly with the nightingale into the woods. How he would forget the knowledge that he had obtained in this life (perhaps he feels it was in vain) and "fade far away". When he comes back out of his daydream, he speaks of where he is. He says that he is "where men sit and hear each other groan; where palsy shakes a few, sad, last gray hairs," this could be alluding to a hospital where people were struck with paralysis, but it was a condition which would have the sufferer experience involuntary tremors.
In the seventh stanza, the speaker of the poem praises and yet, condemns the beautiful song bird for its life style. He says "...