Cornelius During was born in Bielefeld, Germany as son of a musician-family. He started his musical education in the age of 5 years by learning to play the violin. After he had changed to the viola he became member of the Deutsche Streicherphilharmonie and pupil of the C.-Ph.-E.-Bach-Gymnasium Berlin.
Influenced by conductors like Michail Jurowsky, Hanns-Martin Schneidt, Michael Sanderling and Sebastian Weigle, he began to start up his first own orchestral-projects as a conductor and took up his conducting-studies at the Hochschule für Musik FRANZ LISZT Weimar with Prof. Nicolás Pasquet, Prof. Anthony Bramall and Martin Hoff. Besides he got lessons from Prof. Gunter Kahlert and was active participant of master classes with Tomás Koutnik, Morten Wensberg, Tim Redmond, Mark Heron and Jorma Panula.
Cornelius During graduated in July 2012. Since then the finalist of the Atlantic Coast International Conducting Competition 2016 worked as a guest conductor with numerous orchestras. For example the Philharmonie Baden-Baden, the Jenaer Philharmonie, the Berliner Symphoniker and the mdr-Sinfonieorchester Leipzig. Also he was assistant conductor in opera productions of Boris Godunov, Tosca, The flying Dutchman, Tristan and Isolde and Ennio Porino's Opera I Shardana at the Teatro Lirico di Cagliari, the Oper Leipzig and the Dresdner Semperoper.
Currently Cornelius During is chief conductor of the Studentenorchester Münster. Additional to the concerts with his orchestra he conducts several concerts for children every year. Besides the musical live setting of the silent movie Ich möchte kein Mann sein, the premiere of Shir-Ran Yinons Headbanging Symphony for Orchestra and Metal Band, and the performance of Giuseppe Verdi's Stabat Mater with the Landesjugendchor Nordrhein-Westfalen were special moments in his career.