The Song:In order to make
Song Reader feel more authentic, Beck filled out the book with fragments of melodies and songs, as well as fictional album collections and made-up song titles. "Japanese Picnic" is listed as part of a collection of "far-flung melodies" about various exotic locations.
While most of the made-up songs in this collection are jokes/puns about various places around the globe, this one is a reference to an old sheet music instrumental of the same name.