Ultrademon has been played on NTS shows including Young, with The Bayou first played on 10 November 2017.

Ultrademon, real name Lilium Redwine, is an experimental musician and researcher exploring the intersections of electronic music, archaeo-acoustics, and prehistoric archaeology. Active for over two decades, she first emerged in the early 2010s on Aphex Twin's Rephlex Records. Her work spans exhibitions, performances, and collaborative projects, often drawing on her background in archaeology and engaging with themes of the underworld. In recent years, she has moved beyond emotionally driven dance music, incorporating black metal vocals, waves of distortion, and atmospheric, narrative-driven textures into her albums and performances.