Sonja was born in the Swiss Mountains in autumn 78. At the age of four, she got in touch with her 1st instrument: the piano. Aside her classical music studies, she was on the search for other musical styles. As a Depeche Mode and David Bowie young teenage fan, she was a bit out of her time. With the wonderful discovery of acid music sounds and electro rythmics she did while visiting underground and open-air parties all over Switzerland and Germany, she dived into the whirl of electronic music.

In the mid-nineteens, when the rave Syndroma turned into a tasteless carnival, she devoted herself to weird parties organizations in several Geneva's squatts during 3 years alongside the Mentalgroove crew. At this time she gave up her piano studies for a new bought Roland R8, started to get professional bookings (Weetamix, Usine...) and to search for silence.

She began the new century teaming up with amazing friends. Miss Kittin opened her the doors, while Weetamix gave her a residency alongside Luciano. After several collaborations with artist- friends (Serafin, Dandy Jack…) and crews (MUTEK Chile, Soap System Istanbul, Cosmic Chile Zürich), Sonja starts a new LIVE/DJ project named Junction SM in 2004 alongside Dandy Jack. It consists on an impressive combination of live and dj sessions that lasts for hours. She also did several solo-live sets. Devoted to her studio, she continues to manipulate sounds and silences…

Since 2005, the label/collective Ruta5 has been under reconstruction and a bunch of label parties are regularly organized. The productive side has not been forgotten, with several releases: among others, Sonja on Karat's compilation, Katapult various 3, that appeared at the end of 2007 on CD and on two split vinyls.and Junction SM on Kalk Pets and Lessizmore in 2009.

Today, Sonja is also working as a sound designer for the swiss-french TV TSR. After some more remixes (Fine Art recordings, Monika enterprise, Kalk Pets), she is preparing some fresh food for her turntables.

Selected events and club gigs in Europe:

Weetamix, Electron festival, Overground festival, La bâtie festival, L’usine, Galerie forde, Terreaux-du-temple, Piping Geneva – La Ruche, Chocolate festival, Loftclub, D!Club, MAD Lausanne – AIR festival Reconvilliers - Caprices festival Crans-Montana – Formbar, Club 11, Via felsenau, Bierübeli Bern – Cabaret, City fox, Zukunft, Aera, Dachkantine, Club Q, Supermarket, Rohstofflager, Rote Fabrik, Hive, M4Music, Streetparade Zürich – Shift festival, NT Areal, Kaserne, Nordstern, Das Schiff Basel – Café Mokka Thun – Jazz festival Chiasso - Grand hotel Locarno – Paleo festival Nyon – Montreux Jazz Festival - Schatzalp Davos – Vision Festival Küssnacht - Hidden Solothurn - Fri-son Fribourg - Panorama Bar, Week-end, Rosis, Polar.TV, Watergate, Transmediale Berlin – Fusion festival, At.tention Larz - Ultraschall, Musterraum, Club Villa, Harry Klein, Woanders Munich – Basement Club Wiesbaden - Suite 15 Regensburg - U60, SpacePlace, Ciné Royal Frankfurt - Rubin, tanzhalle St pauli Hamburg - Südpol boot Würzburg – C/O Pop, Odonien, Grüzi club, Subway, Kunstwerk, Cologne – Colibri, Finca Stuttgart – Douala Ravensburg - Audio pixel Konstanz - RauchBar Feldkirch - Icke Micke Vienna - Flexbar, Studio 80, Paradiso Amsterdam - Rex, Pulp, Nouveau casino, Batofar, Point éphémère Paris - Paysages électroniques, Kiosk Lilles - Fuse, Bruxelles - Fabric, Replicants London - Freerotation festival Wales - DC10, Privilege Ibiza - Nave 9, Loft, Moog, Be cool, Mochima, Zentraus, City hall Barcelona – Electrostar Bilbao – Fiesta privada Roma - Peter Pan Riccione - Alta Voz Venice Alta Voz Bologna - Tenax Florence – Mood, Bordello Torino - Link Bologna - KontraMusik Malmö (Sweden) – Kruthuset, Bunker Stockholm - Hal D, Culture-box Copenhaguen – Godet, Indigo Istanbul – Elvis bar, Venue, Cream Thessaloniki - Almyra Chalkidiki (Greece) - Aquarius Zagreb - Safehouse Croatia - Unsound festival Krakov - Session, Rokolektiv festival Bucharest - La Mania Mamaia

Selected events and club gigs outside Europe:

Gotham, Pacotek Jerusalem - ISM club, Yellow Tokyo - Absolute house Shanghai - Tango, White rabbit Beijing - Lov.E, D-Edge sao Paulo – Dama de ferro Rio de Janeiro - Castillo Ross Viña del Mar - Ex OZ, Teatro Italia, Ozono, Quinto Sol, Sundeck, Santiago de Chile – Earthdance Isla de Maipo - Mutek Chile Valparaiso - La Morocha Mar del Plata (Argentina) – Niceto, Crobar, Bahrein Buenos Aires – Hipodromo Rosario - Rioma, Ixchell Bosque de Chapultepec Mexico DF - Micro Mutek, Bar Americas Guadalajara – Convention center Juarez - Santanera Playa del Carmen – Mutek Festival, Piknik electronik, Laika, Academy Montreal - Footworkbar Toronto - Soundwave festival Vancouver - Uddermadness Denver - Alphahouse St-Louis - Robots @ Love, Cielo, Canal 59 NYC - Sonotheque Chicago - DEMF, Masonic temple, Buzz bar Detroit – Muse Washington DC - Hear Los Angeles – Audiokinesis, Sunset boat party San Francisco