On 3 June 2019, Varg was a guest on Brav; on 1 November 2018 was a guest on Posh Isolation; and on 7 September 2017 was a guest on Posh Isolation. Varg has been played on NTS over 100 times, featured on 98 episodes and was first played on 7 April 2015.

Varg aka Jonas Rönnberg (aka Varg2), is a techno/ambient producer (himself with a background in black metal), releasing subtle, off-kilter analogue jams on the Northern Electronics label, run out of Sweden by Abdulla Rashim and on Copenhagen's Posh Isolation.