Born in 1976, Hong Chulki is an improvising/noise musician from Seoul, South Korea. With Choi Joonyong, he founded the first Korean noise music group Astronoise in 1997 and experimental music records label Balloon and Needle in 2000. His main instrument is amplified/unamplified turntables in the recent years. He has been active in audio-visual performance with Korean film artist Lee Hangjun under the name of Expanded Celluloid/Extended Phonograph. He has collaborated with several improvising/noise musicians including Ryu Hankil, Jin Sangtae, Joe Foster, Kevin Parks, Otomo Yoshihide, Sachiko M, Takahiro Kawaguchi, Jason Kahn, Bryan Eubanks, Will Guthrie, Aaron Dilloway and Okkyung Lee.