Theremidi Orchestra (TO) is an audiovisual DIY community, initiated by participants of the Theremini and Teremidi physical interface workshop, organised by Ljudmila – Ljubljana Digital Media Lab in May 2011. Rather than a subject, TO is a verb, an ongoing workshop of noise and drone production. This hands-on electro noise ensemble exists in the present continuous, while referring to the history of electronic sound. TO has a DIY/DIWO approach in making music and sound experiments, developing its own instruments based on open-source electronic circuits. Members of TO are coming from different professional backgrounds. Theremidi Orchestra is a process of mutual understanding and solving problems in a horizontal manner. The process of production involves experimenting with sound outputs, mutual composition of music scores, shared responsibilities for individual parts of the process, etc. Thus far, the orchestra performed, exhibited and held workshops at over thirty festivals and exhibitions such as: CT-SWaM & Eyebeam in New York; ARTos Foundation, Nicosia, Cyprus; Zasavje Noisefest International, Trbovlje; Maker Fair in New York; Piksel Festival in Bergen Norway; LiWoLi Festival in Linz, Austria; PoolLoop in Zürich, Switzerland; U3: Kino Šiška, Ljubljana; Triennial of Contemporary Art, Museum of Contemporary Art in Ljubljana, Platforma RADAR, Radio Student, Ljubljana to name just a few. Members of the Theremidi Orchestra performing at Spektrum are: Dušan Zidar, Ida Hiršenfelder, Luka Frelih, Tina Dolinšek, Robertina Šebjanič, Tilen Sepič, Simon Bergoč, Isac Petruzzi. 

Nahum (b.1979, Mexico) is an artist, based in Berlin. His work focuses on producing projects that explore the possibilities of generating wonder and enchantment in our experience. By using outer space technologies and magic strategies his projects create extreme perspectives. In 2014 Nahum was recognised as a Young Space Leader by the International Astronautical Federation for his cultural contributions to outer space activities. He co-directed of space mission in zero gravity by artists in collaboration with the Yuri Gagarin Cosmonaut Training Centre in Russia called Matters of Gravity He is the coordinator of the Technical Committee for the Cultural Utilizations of Space at the IAF in Paris and directs the international festival of culture and outer space KOSMICA. In 2015 Nahum curated the digital arts biennial TransitioMx in Mexico City. Nahum is also a founding member of the London based musical ensembles Orchestra Elastique.  

Wolfgang Spahn is an Austrian-German visual artist, based in Berlin. His work includes interactive installations, miniature-slide-paintings and performances of light & sound. His art explores the field of analogue and digital media and focusses on both their contradiction and their correlation. That's why he is also specialized in re-appropriated and re-purposed electronic technologies. Spahn's immersive audio-visual performances merge the technically distinct production of images and sounds. In this respect the data stream of a digital projector becomes audible whereas the sound created by electromagnetic fields of coils and motors will be visualised. Spahn teaches at the Professional Association of Visual Artists in Berlin (BBK-Berlin) and is associated lecturer at the University of Paderborn, department of media studies as well as at the University of Oldenburg, department of art and visual culture. Spahn presented his work in national and international exhibitions (Selection): 2000 Biennial of young Art in Genua, Italy; 2003 The Kosovo Art Gallery in Pristina, Kosovo; 2005 Biennial in Prague, Czech Republic; 2010 Biennial Of Miniature Art in Serbia; 2010 Media-Scape in Zagreb, Croatia; Musrara Mix 2015, Jerusalem, Israel; Bodenlos – Vilem Flusser und die Künste 2015/16, Akademie der Künste, Berlin. He was also exhibiting at international Festivals of Media Art (Selection): 2008 and 2009 Internationales Klangkunstfest in Berlin, Germany; 2009 The Art of the Overhead in Malmö, Sweden; PIXEL09 and 15 in Bergen, Norway; Transmediale 2012 and 2014, Berlin, Germany.

Theremidi Orchestra - "Sound Happens!" from Lukasz Antkiewicz on Vimeo.