From publisher blurb:
Music and Madness!
The Necrotic Verses is a book of mystic secrets grounded in the corrupted composition of a musical maestro whose otherworldly obsessions drove him to madness and beyond yet left behind magical masterpieces like the Dead Man's Frolic, Dance of the Empty Moons, and the Opus of the Golden King! Power awaits all who dare to delve into the sinister secrets contained within The Necrotic Verses! Grab this 10-page 5E supplement today and Make Your Game Legendary!
In 5th Edition campaigns where horror, madness, or tragedy play a central theme, blasphemous books and tomes of terror often play a key role in unlocking sinister secrets man was not meant to know. Each Gothic Grimoire is evocative and richly detailed, with history and character that makes them far more than a collection of dusty pages that deliver intriguing possibilities for introducing novel applications of the rules of your favorite role-playing game. These are Tomes of Ancient Knowledge (5E), dialed up to eleven.