Sema has been played on NTS shows including Peking Spring w/ Jon K, with The Pleasure Of The Text first played on 21 January 2018.

Sema is an alias of Robert Haigh (Omni Trio) under which he released experimental minimal music in the 1980s. The name comes from a group of artists associated with painter Paul Klee.

Sema is also the stage name of Sema Moritz, a German-Turkish singer.

Born in Ankara, Turkey, her initial career was in Turkish classical music. She moved to Germany, where in the 1970s she sang for a time in the Türkischen Arbeiterchor Westberlin. She also studied singing and acting. In the mid-1980s she was a singer with Ensembles Kreuzberger Freunde. In 1989, still living in Berlin, she and her husband, Dieter Moritz, formed the group Taksim, which released a number of albums.