While poet was thinking about the mortality of human life and wishes to escape from the unpleasant aspect of human life, he adored the nightingale’s song and he finds charming peace in it. He was fascinated with the beauty of her song. He told that nightingale’s song will always be immortal it will never end up like a human age and will never die like a human. He wishes to fly like a bird, Keeps on listen to her song and live a life like a bird. He realizes that whatever he was imagining was impossible. He praised beautiful humming voice which will always be immortal and which has been heard by many people earlier and people will keep on listening but the difference will lie that people will change with time