The comparisons drawn between figurative and literal concepts give the poem many double meanings that lend themselves to the theme of an unfortunate progression of time. Adding to these layers is the musical quality that Thomas creates through the use of rhythm, meter and other musical instruments. This adds to the atmosphere of the poem, which helps show what the narrator is missing from his childhood. Over the course of the story being told, the atmosphere becomes progressively darker as the narrator begins to mourn the simplicity of life that he has lost over time. By the end of the poem, Dylan Thomas's point is clear: life's changes over time are not always pleasant, but they will happen