Diablo IV is a 2023 multiplayer-only action role-playing game developed and published by Blizzard Entertainment. Blizzard Entertainment Music Director Derek Duke invited NYX to collaborate on the soundtrack, providing choral, embodied and otherworldly textures for the expansive worlds of Diablo IV.

Announced at BlizzCon 2019, the game was released on June 5, 2023 for the PlayStation 4 and PlayStation 5, Xbox One and Xbox Series X and S, and Microsoft Windows. On June 6, 2023, Blizzard Entertainment announced that Diablo IV became the fastest-selling game in Blizzard Entertainment's history. Diablo IV has generated $666 million in revenue within the first 5 days of launch.

The world of Diablo IV is a dark and treacherous place - one where players navigate through a sinister landscape filled with demonic forces and twisted horrors. One of the key elements that allow players to immerse themselves into this haunting realm is the game's captivating soundtrack. Behind the scenes, senior composers Ted Reedy and Leo Kaliski worked tirelessly to create an audio experience that complements the game's atmosphere and narrative.

Over 2022, NYX singers workshopped music ideas with NYX Music Director Sian O’Gorman and Somatic Movement Director Imogen Knight to find a new type of sound in response to visual references and video game scenes. Recorded at Abbey Road Institute Angel Studios and engineered by John Kurlander, NYX performed this music and improvised further soundscapes that feature throughout the game.