On 4 December 2018, Josiah Steinbrick was a guest on Arp; and on 19 November 2017 was a guest on Adam Oko. Josiah Steinbrick has been played on NTS over 60 times, featured on 62 episodes and was first played on 24 September 2017.

Josiah Steinbrick (born July 13, 1981) is a multi-instrumentalist, composer, and producer currently based in Los Angeles, California.