Joshua Howard Luellen (born February 2, 1989), professionally known as Southside or Southside on the Track, is an American hip­hop record producer from Atlanta, Georgia. Luellen was born when his mother was 18 and still in high school. His father, Masaba Tyson, was also a producer known as CAPP1 who produced for several Atlanta hip­hop acts, including for local hip hop giants OutKast. Southside started making beats when he was 14 years old, when he got his first computer. Southside produced the majority of the t r a c k s o n W a k a F l o c k a F l a m e ‘ s a l b u m s T​r i p l e F L i f e : F r i e n d s , F a n s & F a m i l y ​a n d F​e r r a r i Boyz.​In 2011, Southside founded his production group 808 Mafia, which is now home to producers Tarentino, Purps, Fuse, and others. Southside grew up in Southside Atlanta, Georgia, which is where basis of his stagename came from.​He was later discovered by
rapper Waka Flocka Flame, who signed and helped found 808 Mafia in 2011.​808 Mafia is now home to producers Tarentino, Purps, Fuse, and others. Southside’s first major release was the song “Fuck the Club Up,” which appeared on Waka Flocka’s debut album Flockaveli.​In 2011, Southside co­produced the track “Illest Motherfucker Alive,” from
K a n y e W e s t & J a y ­ Z ’ s c r i t i c a l l y a c c l a i m e d a l b u m W​ a t c h t h e T h r o n e . ​ ​ ​T h i s h e l p e d t o b o o s t

his career and bring him into the mainstream. He has since worked with artists such as Rick Ross, B.o.B, Wale, Meek Mill, Lil Scrappy, MGK, among others. Southside is now credited for producing the majority of Future’s music, in 2015 alone producing a whole project (5​6 Nights)​for the Atlanta rapper and 11 of the 18 tracks on his critically
a c c l a i m e d a l b u m , D​ i r t y S p r i t e 2 . ​