"Opulent, raw, almost physical, a tour de force [...] sound composition that creates powerful images" (Award Jury, Hörspielwiese Köln, Germany).

N. I. Mueller (NM for short), a Black Forest-born maker and discoverer of sounds, has been active as an improvising musician in the experimental music scene since 2010. He has toured across two continents, produced an award-winning radio play and worked as an academic staff member in degree programme development (Master of Music - Composition) and research since 2022 at Trossingen University of Music's State Centre for Music, Design and Performance. As a recordist, designer-producer and organiser he runs a creative workshop and compact studio named NM Soundindex, out of Meersburg, Lake Constance, Germany.

Under the moniker Ypsmael (live electronics, electroacoustic improvisation) and a handful of solo and collaborative projects, NM's work spans a range of improvised and composed experimental musics, sound art and radio art noted for "exploring the grains and textures of his materials [...] to create a very distinctive language of his own" (The Sound Projector Music Magazine & Radio Show, UK), using "the studio as an instrument, cooking up surrealistic pieces of music [with] a solid musical thread" (Vital Weekly, Netherlands), and "evocative soundscapes that are as unsettling as they are moving" (Loop Music Magazine, Chile).

Biography | CV 

Work | Projects