The Road Goes Ever On (book)
Although the book can at first sight seem mostly useful by musicians (particularly piano and guitar players), it has been found to have a wider use than this, allowing readers to understand the cultures of the various mythological beings presented in Middle-earth better, and helping linguists analyse Tolkien's poetry. For example, it contains one of the longest samples of the language Quenya.
The second edition of The Road Goes Ever On, published in 1978, included the poem Bilbo's Last Song.
The third edition, published in 1993 and likely the last, comes with additional poetry and also a CD with recordings for the entire song cycle.
List of songs (Third Edition):