His first album, Un été sur l'herbe, recorded in 2005-2006, came out in 2007 under the French label Annexia Records, followed by Galaxy of Nowhere on Asphalt Duchess and Rising Doom on Fool House. During that time, he also released a certain number of EPs : Principles on Fool House, Nuits sauvages on Citizen Records, Libera me and Deaf House on Asphalt Duchess, as well as a limited edition of Day of Anger. At that point of his career, he had already performed live in several music festivals around Europe : Nuit Electro at the Grand Palais, Astropolis and Strøm in 2009, Transardentes and Solidays in 2010, The Great Escape Festival in May 2011, Vieilles Charrues Festival in July 2011, La Route du Rock in August 2011, Pitchfork Music Festival in October 2011... His remixes were noticed by the specialized media, and also by musicians such as Agoria, Busy P, Boys Noize, Patrice Baumel, Radio Slave, James Zabiela, etc. When asked about his pseudonym, he provided the following explanation : « People were saying that I always had my head in the clouds' and that I wasn’t able to concentrate. I finally came up with this german word ', I thought it sounded good and so I kept it ».
In 2012, in collaboration with the visual collective Trafik, he created the ambient live "Eclipse" at the Cité de la Musique in Paris, on the occasion of a Brian Eno tribute party. Under his own record label In Paradisum, that he launched alongside with Guillaume Heuguet, he released the EPs Ease your pain and Ease your pain remixes. He started performing regularly during the label’s events, dedicated to the underground techno and ambient international scene. In 2013, in parallel with a couple of appearances in Berlin, he collaborated with Perc Trax to release the EP The Nicest Way. In 2014, his fourth album Hadès, released under In Paradisum, represents a « new start »: Mondkopf distances himself from pure techno in order to experiment sounds on « the most goth and doom side of the industrial scene ». As he describes it himself, his musical approach follows a cathartic and redeeming logic, in a mental environment that is tinted with mysticism. He continues to perform live on various occasions, among which was a unique collaboration with Charlemagne Palestine for the 2015 edition of the Sonic Protest festival. In February 2016, on In Paradisum, he released the EP The Last Tales, that he elaborated during the Hadès tour. He is currently working on several projects, either solo or involving other artists in the entourage of In Paradisum.
