He appears on three songs: "MOJO JOJO," "BACKD00R," and “GOOD CREDIT.” On the first two tracks, he mostly plays the role of hype man, adding adlibs to energize his “evil twin.” (He starts off “MOJO JOJO,” saying: “I need that Back to the Future Carti. I need that four Alien Carti. I need that beep, beep, beep, beep, extra-terrestrial Carti.”)

Ensembles designed to wow and confound are tossed to the side with the same zest and vigor that brought them together. The 29-year-old Atlanta rapper’s shifting sound and persona were first cultivated as a member of the Awful Records crew and later,