premise: The Book of Mormon predated the Grammy Award for Best Musical Theater Album.
hypothesis: Book of Mormon . It was first published in March 1830 by Joseph Smith as The Book of Mormon : An Account Written by the Hand of Mormon upon Plates Taken from the Plates of Nephi . The Book of Mormon (musical) . The show was awarded nine Tony Awards , one of which was for Best Musical , and a Grammy Award for Best Musical Theater Album .