Simon Christensen, better known as Psymun, is an American platinum-certified music producer and samplemaker from Minneapolis, Minnesota. He gained relative notoriety as a member of Thestand4rd, a Hip-Hop/R&B group that included musicians like Bobby Raps, Allan Kingdom, and the elusive, ever-popular rapper Corbin (Spooky Black); the latter of which Psymun is most known for his work with.

Aside from Corbin, Psymun has worked with a number of high-profile American rappers, most notably Young Thug, Future, Lil Baby, Juice WRLD, Gunna, Trippie Redd, Meek Mill, and YG, among others.