The song "Ridin' On The L&N" by John Mayall & The Bluesbreakers is about a train journey on the Louisville and Nashville Railroad. The narrator is describing the experience of riding on the train with a lot of other people. The train whistle blows, and they travel through different places on their journey. The lyrics mention some of the people on the train, including a man named Quin who talks about the train and how it's been, and another man named Mose who has a big nose and falls asleep on a pile of toes. The doctor comes to attend to Mose, and wishes him to get well soon. The song doesn't necessarily have a deep meaning or story behind it, but it captures the sense of a journey and the people and experiences encountered along the way. The repeated line "I'm ridin', ridin' on the L&N" creates a sense of movement and momentum, emphasizing the joy and excitement of traveling by train.