Rap collective SOB X RBE formed in Vallejo, California in early 2016, founded by young rappers Yhung T.O, DaBoii, Slimmy B, and Lul G. The group's moniker stands for "Strictly Only Brothers x Real Boi Entertainment." While still in their early teen years, Yhung T.O and DaBoii worked on music with whatever rudimentary technology they had access to, often recording lo-fi songs on their phones. The group took shape when Yhung T.O and DaBoii teamed up with neighborhood friends Slimmy B and Lul G Read more on Last.fm