Haedeun Lee was born in Seoul, South Korea. From the age of twelve she was selected as a prodigy by the Kumho Cultural Foundation to give recitals in Korea and Germany. She entered the pre-college division of the Korean National University of Arts to study cello and later graduated from Yewon School, the Seoul Arts High School and the Seoul National University where she received the Excellence in Music Prize. Haedeun Lee holds a Master of Music degree and a Konzertexamen degree from the Berlin University of the Arts (UDK) and the Rostock University of Music and Theatre respectively. Her teachers included Wolfgang Boettcher and Julian Steckel. She has appeared as a soloist with the North German Philharmonic Orchestra, the Philharmonie Baden-Baden, the Hungarian National Philharmonic Orchestra, the Incheon Philharmonic Orchestra, the Daegu Symphony Orchestra and the Seoul Soloists Cello Ensemble. She has also performed as tutti cellist with the Berlin Radio Symphony Orchestra, the Leipzig Gewandhaus Orchestra and the Staatskapelle Dresden. Her experience includes concerts in prestigious concert halls including the Berliner Philharmonie, the Musikverein in Vienna and the Semperoper Dresden and collaborations with world-renowned conductors including Paavö Järvi, Marek Janowski, Christian Thielemann, Riccardo Chailly and Herbert Blomstedt. Following her successful career in Europe she was invited to join the cello section of the Gyeonggi Philharmonic. More recently she has served as the principal cellist of the Seongnam Philharmonic Orchestra, the New World Philharmonic Orchestra, the Asian Philharmonic Orchestra and the One Korea Orchestra. Haedeun Lee is currently a member of the Seoul Soloist Cello Ensemble. She joined City Chamber Orchestra of Hong Kong as principal cellist in 2020.