"Here Comes That Train" is a country ballad written by Joe Diffie. The song describes the heartache and pain of a lost love. The lyrics convey the narrator's emotions as darkness falls, and he begins to cry like rain. The blue whistle, representing the lost love's memory, moans out her name. The narrator is overwhelmed by sadness and cannot contain his emotions. The train metaphorically represents his inability to control his heart or thoughts, just like a runaway train. The pain he feels is like the burning coals that fuel the steam engine of the train and push it forward, unstoppable. The narrator acknowledges that his tears have created the tracks that the train barrels down, symbolizing that the pain of his lost love is the driving force behind his emotions. The song ends with a warning to his heart to be ready for the oncoming train. Overall, "Here Comes That Train" is a poignant, emotional ballad about heartache, loss, and the inability to control one's emotions in the face of love. It has resonated with many listeners who have experienced similar intense emotions in relationships.