Gyeonggi Philharmonic Orchestra
- 1997-1999 - Serve as deputy chief in Prime PhilharmonyOrchestra
- 1997 - Perform a Trombone Solo in New player Concert, hosted by Chosun Newspaper
- Feb 2004 - Perform in Korean Brass imSauerland-Herbst
- Aug 2004 - Solo Perform in IX CursoInternacional de Perfeccionamiento Musical in Oviedo/Spanian
- 2004 - 5.Internationaler Sauerländer Brass-Workshop imSauerland-Herbst 2004 (Participation for Korean Brass & Invited to play), Accompanied performance with Germany NWD Orchestra, Accompanied performance with Eurasian Orchestra
- Lectures at six different colleges : Seoul National University, Ewha Women's university, Kyunghee University, Chungang University, Konkook University.
- 2014 – now - Gyeonggi Philharmonic Orchestra, Principle