Sunshine by Keane is a powerful alt-rock ballad that delves into themes of hope, renewal, and inner strength. The song's lyrics depict a journey from darkness to light, emphasizing perseverance through tough times and the importance of optimism. The recurring metaphor of 'sunshine' symbolizes positive change and brighter days ahead. A particularly poignant moment is when the singer casts aside doubts and fears, embracing the belief that things will improve.