The songs for the K-pop Demon Hunters soundtrack were written by a team of songwriters including Danny Chung, Ido, Vince, Kush, EJAE, Jenna Andrews, Stephen Kirk, Lindgren, Mark Sonnenblick, and Daniel Rojas. EJAE, a Korean- American singer-songwriter who was also a K-pop trainee for nearly 10 years, played a key role in writing multiple songs such as "Golden," "How It's Done," "Your Idol," and "What It Sounds Like." Producers for the soundtrack included Teddy Park, 24, Ido, Dominsuk, Andrews, Kirk, Lindgren, and Ian Eisendrath, who was also the executive music producer for the project. The songs were performed under the fictional group names Huntr/x and the Saja Boys, representing the two rival groups in the film. EJAE contributed bilingual lyrics integrating Korean and English and helped craft the emotional and narrative elements of the songs. The soundtrack features a mix of original songs and previous releases by established K-pop artists and was released in 2025 alongside the Netflix animated musical fantasy film "KPop Demon Hunters".