Meaning of "How Long, How Long Blues" by B.B. King

The lyrics in "How Long, How Long Blues" by B.B. King delve deep into themes of longing, heartache, and loss. The repeated questioning of how long it has been since the train left signifies the passing of time and the pain of being separated from a loved one. The imagery of the mountains, rivers, and seas represents the vastness of the world and the singer's futile search for their lost love. The metaphor of the train running into the singer if they don't find their baby conveys a sense of impending doom and desperation. Overall, the song captures the raw emotion of unrequited love and the haunting feeling of being left behind.