Derek Smith (born March 10, 1987), known professionally as Mod Sun (stylized as MOD SUN, an acronym standing for "Movement on dreams, stand under none"), is an American rapper, author, rock musician and poet from Bloomington, Minnesota.
Mod Sun was formerly a member of the post-hardcore band Four Letter Lie, in which he played drums from 2004 to 2009. He also was the drummer of the post-hardcore band Scary Kids Scaring Kids from 2009 until their disbandment in 2010. He claimed that the only reason he joined Scary Kids Scaring Kids is that he was unemployed and selling marijuana and after watching the movie Yes Man he decided to say yes to everything. So, when the lead singer of Scary kids Scaring Kids approached him at Warped Tour, he said yes to joining them on the rest of tour. He originally was the drum tech for the band and he was asked to fill in for the drummer once the original drummer had quit; he only agreed to do it if he got to perform as Mod Sun. That would be his first time going up on stage as Mod Sun. He has released five mixtapes and three EPs throughout his solo career. Mod Sun's style of music is often described as "hippy hop." Mod Sun's debut album "Look Up" was released on March 10, 2015, through Rostrum Records. On March 10, 2017, Mod Sun's second studio album "Movie" was released through Rostrum Records.