This Hobbit walking song, sung several times both in the Hobbit and the Lord of the Rings. It has been set to music in several different ways- here's just one example of the full song.
For anybody who's very new to western literature and hasn't heard of Lord of the Rings before, the best place to start is probably with an understanding of the author, J.R.R. Tolkein.
For those interested in linking the other places in Inkheart to specific world geography, the 2008 movie Inkheart used North Italy's Lago di Como as Elinor's home; the nationality of the author and the length of time it takes Meggie and Mo to drive to Elinor's house suggests that they live somewhere in southern Germany, although where exactly is left extremely ambiguous. In fact, there's no mention of nationality anywhere in the English text of Inkheart, despite its international setting, and none of the characters ever encounter language barriers with people from other countries or worlds- perhaps this is a parallel universe where everybody in Europe automatically speaks the same language?
Isaac Bashevis Singer is a Jewish-American writer with Polish roots. He was particularly famous for being part of a movement to use Yiddish, a traditional Jewish language, when writing, and Naftali the Storyteller and his Horse Sus is just one of his many Yiddish works.
The Library of Congress currently has an online exhibition of Singer's life here.
Full size image here