When writer and director Joss Whedon created the character Buffy the Vampire Slayer, he could hardly have expected the resulting academic interest in his work.  Yet almost six years after the end of "Buffy" on television, Buffy studies - and academic work on Whedon's expanding oeuvre - continue to grow.  Now with three hugely popular television shows, "Buffy the Vampire Slayer", "Angel", and "Firefly", and the film Serenity all available on DVD, scholars are evaluating countless aspects of the Whedon universe (or "Whedonverse").  This book studies the significant role that music plays in these works, from "Buffy the Vampire Slayer" to the internet musical "Dr. Horrible's Sing-Along Blog."  Cloth, 304 p.