'The Song We Were Singing' by Paul McCartney from his album 'Flaming Pie' is a reflective and nostalgic piece that captures the essence of memories and shared experiences. McCartney reminisces about the past, specifically the simpler times spent with friends where music played a significant role in bonding and communication. The song discusses themes of nostalgia, connection, and the passage of time. Key moments include references to the times spent singing songs together, underlining the sense of camaraderie and the emotional anchor that music provides. It's a tribute to the good old days and the power of shared experiences.