The Song:

In order for it to feel more authentic, Beck filled out his Song Reader book with fragments of songs and melodies, as well as fictional album collections and song titles. "Patience and Potpourri" is listed as being in the collection of manly hymns, Hymns For Him.

While a lot of the song titles on Hymns are made-up, some are references to older sheet music/songs. This one seems to be sort of a reference to a Gilbert and Sullivan opera called Patience. In that opera, there is a piece called "Potpourri."