JAHA KOO is a South Korean theatre/performance maker and music composer. His artistic practice oscillates between multimedia and performance, all of which include his own music, video, text and installation. His performances closely interweave politics, history and his own personal issues.


Since 2014, Koo has been developing his Hamartia Trilogy which focuses on the inescapable past that tragically affects our lives today. The first part of the trilogy, Lolling and Rolling, was premiered by Zürcher Theater Spektakel in 2015. The second piece, Cuckoo, was premiered at Steirischer Herbst Festival in 2017. The final part of the trilogy, The History of Korean Western Theatre, will be premiered in 2020.


GuJAHA is the pseudonym of JAHA KOO as a music producer. His most recent EP was Copper and Oyster in 2015.