The song "Someone That You Used To Know" by George Jones tells the story of a person who receives a letter from someone they used to know. The opening lyrics describe a closed room that can be opened by this person from the past. The narrator mentions that it has been a long time since they last saw her. The letter arrives unexpectedly, much like a sudden rain. The sender expresses that they have been thinking about the past and the times they had together. They request a meeting at a familiar location, signing off as "someone that you used to know." The lyrics continue by comparing time to a river, constantly moving forward and never returning to the same place. However, certain individuals have a lasting impact on our souls, leaving an indelible presence even after many years. The sender acknowledges that the years have brought both good and bad experiences but the memories of their time together still remain. Ultimately, the song speaks to the lasting impact some people have in our lives. It explores themes of nostalgia, longing, and the profound effect someone from the past can have on us.