The song 'Midnight' by America delves into the themes of introspection, solitude, and longing. It reflects on the quiet and contemplative moments that happen during the late hours of the night. The key themes include self-reflection, the passage of time, and a yearning for connection and understanding. One particularly poignant moment is when the lyrics address the silence of midnight and the thoughts that emerge in solitude, highlighting the depth and introspective nature of the human experience.