Sometimes you read a book and think that this book is written for you and you alone.
Verlyn Flieger's Interrupted Music is such a book.
I add the phrase "and you alone" to my opening because for many years Tolkien was for me a private passion. When I see today how many people love the master of Middle-earth and his many songs (as some might put it), particularly after the release of the Lord of the Rings movies at the dawn of the century, I wonder at my own story--how what was in many ways a defining story, well, series of stories, in my life, a solitary pleasure. Unbeknownst to me for many years, that pleasure was shared by so many.
Now, after that Beowulfian digression, let me return to Flieger's book. What makes it such a delight the thoroughness of Verlyn Flieger's research--and her love for, appreciation of, and familiarity with Tolkien's corpus. She helps us locate the genesis of the cosmology/mythology of the legendarium published as The Silmarillion in the great storyteller's biography, the years just before World War I through his convalescence from trench fever.
Later we learn of the emergence of Númenor just about the time The Hobbit was published in the mid-1930s.
There is so much more to this book than that. And for those trying to understand the roots of a great man's storytelling genius, Flieger's Interrupted Music is a very good start. Very good. Excellent, indeed.
There are many Tolkien geeks, many more than I could even imagine when, as a lad, I found a home in Middle-earth. This book is not for me alone.