Chicago Underground Orchestra has been played on NTS in shows including Music To Ease Your Disease, featured first on 2 September 2018. Songs played include The Inner Soul Of H.

Chicago Underground Orchestra is a jazz collective formed by Rob Mazurek. In 1996, Mazurek founded a workshop at Chicago jazz club The Green Mill called Chicago Underground for the performance of avant-garde, improvisatory jazz. By 1998, a new ensemble had formed around this idea, featuring guitarist Jeff Parker, drummer Chad Taylor, bassist Noel Kupersmith, and trombonist Sara Smith. As the Chicago Underground Orchestra, this ensemble released several albums on Chicago's Delmark Records. Mazurek continued to form groups under the Chicago Underground umbrella, performing as the Chicago Underground Duo and Chicago Underground Quartet.