"Southside Story" is actually not a song by John Mayall & The Bluesbreakers, but rather a song by Little Walter. The lyrics describe a night at a nightclub, where Little Walter is playing his blues harmonica and captivating the crowd. The song speaks to the power of music to touch people's souls and lift them up. The lyrics also touch on themes of love, longing, and the struggles of life. Little Walter's harmonica playing is described as "blowing hot like a southern wind", adding to the intense and passionate energy of the song. The story ends with Little Walter packing up and leaving the club, wandering off into the darkness of the cold Chicago night. Overall, "Southside Story" is a celebration of the power and magic of the blues genre, and the ways in which it can bring people together and make them feel alive.