Choong-real Hahn is one of the best drummers in Korea and a multi-talented K-pop session, arranger, jazz drummer and music producer based in Seoul.

Hahn is an alumnus of Seoul Institute of the Arts, one of the best schools in Korea.

He has a very busy schedule from teaching students in school, performing live and recording, performing with various artists in general practice routine.

He also collaborates with various instrument brands (Istanbul Mehmet, Altune, Snareweight, Nux, Lewitt Audio).

He performs in various styles of venues such as concert halls, festivals, and jazz clubs.

He has his own drum recording studio called SEALSTUDIO.