Joss Whedon's award-winning, Internet server-melting, genre-twisting musical tragicomedy shook the movie industry to its very roots, and quickly became a sensation. Here, at last, is the book fans have demanded! Compiled by Whedon and the production team this definitive companion features: * Behind-the-scenes memories from Joss and his fellow writers Jed Whedon and Maurissa Tancharoen! * Exclusive contributions from stars Neil Patrick Harris, Nathan Fillion, Felicia Day and Simon Helberg! * The full, uncut shooting script, original handwritten lyrics, costume designs, and scores of previously unpublished photos! * The official sheet music!