Sugai Ken is a frequent guest to NTS, appearing on various shows between 2 August 2017 and most recently on 18 November 2020. Sugai Ken has been played on NTS over 110 times, featured on 103 episodes and was first played on 19 April 2015.

Blending native folklore, geographical sound design, and personal ambience, Sugai Ken has been an active composer in Japan's underground scene since the mid-90's. His unhurried and organic compositions, whether self-published or released on beloved labels such as Japan's EM, offer nimbly molded and reshaped interpretations of sound. Since debuting ToKiShiNe (Freed Records) in 2010, Ken has produced a steady stream of releases, his distinctive process of trimming, treating, and expanding found sounds reaching a new peak with 2016's 鯰上 - On the Quakefish (Lullabies for Insomniacs).

With UkabazUmorezU, Sugai Ken delivers an intimate, yet vast, labyrinth layered in heavy fog; the artist, wielding a burning lantern, leads the listener through environments of folklore habit, musique concrète, symphonic music, and the "ambience of night in Japan". In the curious sound world of Sugai Ken, ample space exists for a sound to be everything and nothing at once.