In this week's episode of The Formula, the first of a new season that digs into the collaboration between rappers and producers, we sit down with each of them in their respective cities — Rico at a performance space she frequents in the DMV; Kenny at his home studio in L.A. — to talk about their genre-bending discography and how it remade Rico into rap's raging queen of scream. They lay the groundwork by recalling the making of their signature anthem, "Smack A B****," a song recorded in their first impromptu studio session when Rico was still in the process of finding her voice in an industry brewing with frenemies and rival beefs. From there, they dissect "Sellout," the vulnerable, penultimate track from Anger Management, an album inspired in part by psychologist Arthur Janov's classic therapy tome, "The Primal Scream."