Answer
Ode to a Nightingale is one of Keats' most celebrated masterpieces. It explores themes of beauty, nature, and the transience of life. The poem follows the speaker as they listen to a nightingale's song and reflect on the ephemeral nature of beauty and happiness. Through vivid imagery and rich language, Keats captures the transformative power of art and the bittersweet recognition of life's fleeting moments.