In memory of the great man, here’s a video interview on Arirang TV uploaded in January 2015:
https://www.youtube.com/watch?v=GlfzKsuhZCk
And here he is playing one of his best-known compositions, Chimhyangmoo (침향무 | 沈香舞), performed on the KBS show Gugak Hanmadang.
The definitive obituary in English has been written by Jocelyn Clark in the Asia Times. I was lucky enough myself to get an interview with him back in 2010.
Hwang Byung-ki passed away on 31 January.