facsimile pages from the Dwarves' Book of Mazarbul that is found by the Fellowship in Moria. Further, Tolkien was a philologist; Nagy comments that Tolkien may have been intentionally imitating the philological style of Elias Lönnrot, compiler of the Finnish epic, the Kalevala; or of St Jerome, Snorri Sturlusson, Jacob Grimm, or Nikolai Gruntvig, all of whom Tolkien saw as exemplars of a professional and creative philology. This was, Nagy believes, what Tolkien thought essential if he was to present a mythology for England, since such a thing had to have been written by many hands. Further, writes Nagy, Christopher Tolkien "inserted himself in the functional place of Bilbo" as editor and collator, in his view "reinforcing the mythopoeic effect" that his father had wanted to achieve, making the published book do what Bilbo's book was meant to do, and so realising his father's intention. Themes The Silmarillion is thematically complex. One key theme is its nature as a mythology, with multiple interrelated texts in differing styles; David Bratman has named these as "Annalistic", "Antique" and "Appendical". All of these are far from the approachable novelistic styles of The Hobbit and The Lord of the Rings, lacking a single narrative thread, and without the benefit of Hobbits as guides, as Tolkien noted in a letter. Another major theme is sensitively analysed by Flieger in her 2002 book Splintered Light, which Nagy notes was the first full monograph on The Silmarillion. Flieger shows that a central theme of Tolkien's writing is the progressive fragmentation of the light from the moment of the creation; light symbolises both the divine creation and the author's subcreation. Key symbols including the Two Trees of Valinor, the Silmarils themselves, the transformation of Eärendil the Mariner and his ship Vingilot into the Morning Star, and the White Tree of Númenor all embody the light. A further theme is that of secondary creation or mythopoeia, linking Tolkien's beliefs about mythology, language and art, including music with his Catholicism: the fictional "Secondary World" can be beautiful because it mirrors God's creation. The Ainulindalë directly describes the creation of Arda as an artistic process, the Music of the Ainur having its own beauty but also awakening the world into being. Influence in music In 1998, the German power metal band Blind Guardian released a concept album about the events in the book titled Nightfall in Middle-Earth. The Norwegian classical composer