SPF 50 has been played on NTS shows including Moxie , with Memory Signal first played on 31 March 2021.

SPF 50, real name Stephan Kimbel Olson, is a resident of the longstanding Bob & Shirley party, runs the Professional Music label, and has graced New York’s finest sound systems with his deep, rolling club sets. In his numerous roles - DJ, engineer, party promoter, label head, producer and dancer - Stephan has become an essential contributor to the city's nightlife culture, a fixture in our extended sonic community.