NTS regular Helm has been hosting After Dark w/ HELM since 4 January 2016. Helm is a frequent guest to NTS, appearing on various shows between 22 November 2013 and most recently on 19 September 2018. Helm has been played over 190 times on NTS, first on 24 April 2013. Helm's music has been featured on 185 episodes.

Helm is the solo project of Luke Younger, one half of the London/Berlin noise duo Birds of Delay and guitarist for avant-weirdos Spin Spin The Dogs. Drawing equally upon noise and ambient elements, the music on Impasse illustrates Younger’s continuing development within the field of experimental electronics and drone composition. Utilising synths, feedback systems and effects, these two long-form tracks offer a dense mixture of blistering yet melodic walls of sound.