This week's soundtrack has featured considerable amounts of nostalgia. All it took was a chance hearing of "I am the Walrus" and off I went. I like the story about the writing of this song in the wake of a letter to John Lennon from a pupil at his old school informing him that one of the English teachers was using Beatles lyrics in class, analysing them for meaning, Lennon then wrote "Walrus" and remarked "Let the fuckers work that one out."