After studying in Berlin, Chicago and Hannover, Kilian Herold won the audition for Principal Clarinet of the Deutsche Kammerphilharmonie Bremen in 2004, at the young age of 23.

Ever since then, his fine playing has been featured on many CD and DVD recordings made by that renowned chamber orchestra (for instance , the Beethoven and Schumann  symphony cycles with Paavo Järvi), and also in their live performances in Germany and abroad.

Kilian Herold was early successful in a number of competitions and selected for scholarships by the Cusanus Foundation and the German Music Council (Deutscher Musikrat).

As solo clarinetist he is often invited to play with some of the mostrenowned orchestras including the Berlin Philharmonic, the Bavaria Radio Symphony Orchestra,  the Dresden Staatskapelle, the WDR Symphony Orchestra, in collaboration with conductors such as Paavo Järvi, Daniel Harding, Theodor Currentzis, Christoph Eschenbach, Herbert Blomstedt and Valerie Gergiev. His impassioned chamber music and solo performances have thrilled festival audiences at Rheingau Music Festival, Schleswig-Holstein  and the Baden-Baden International Brahms Festival, along with further recitals all over Europe, in South America, India and Japan.

In 2011 he became the new Principal Clarinet of the SWR Freiburg/Baden-Baden Radio Symphony Orchestra.

Kilian Herold has appeared as soloist with orchestras like the Deutsche Kammerphilharmonie Bremen, SWR Symphony Orchestra and Istanbul Devlet Symphony Orchestra playing the clarinet concertos by Mozart, Webe and Nielsen.

In autumn 2012 his new CD with works by Brahms and Comtemporaries recorded with pianist Amir Katz was released by Avi-Music. In 2017 a new CD project with works by Hungarian composer Matyas Seiber together with German soprano Sarah Maria Sun was released.

Since spring 2016 Kilian Herold is the new clarinet professor at the Freiburg Music University. 

He is teaching regularly at masterclasses and festivals. In Staufen, south of Germany, Kilian Herold has started his new clarinet festival ClariMondo