Kim Sun has been played on NTS shows including The Do!! You!!! Breakfast Show w/ Charlie Bones, with The Man Who Must Leave first played on 6 April 2017.

Kim Sun (김선) is a South Korean artist from the 60s. Her track 떠나야할 그사람 (compiled as The Man Who Must Leave) originally appeared on the second side of Kim Choo Ja (김추자)'s album 늦기전에 (Before It's Too Late) in 1969.