N. I. Mueller (NM for short) is a Black Forest-born artist, writer, maker and discoverer of sounds, who lives and works in Meersburg, Lake Constance. He has been active as an improvising musician in the experimental music scene since 2010, toured across two continents, produced an award-winning radio play and worked in degree programme development (Master of Music - Composition) and musicological research as an academic staff member at Trossingen University of Music's State Centre for Music, Design and Performance (2022 - 2025). As a recordist, designer-producer and organiser he runs a compact studio, label and creative workshop named NM Soundindex.

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).

Bio | CV (on request) | Work | Projects