If you consider Rick Ross' "B.M.F." as the apex of Lex Luger-stamped trunk rattle, a song like "Keys to the Crib" is a fitting era-ending marker. The beat here, which was made by Jay-Z-approved production team the Inkredibles, is characteristically Rick Ross huge, but returns to an altogether different set of sensibilities-- it's classically victorious, clean and brassy. It sounds expensive. Ross shows no struggle in transition, matching the beat's momentum blow for blow. At the end, he reminds us: "My next move: God Forgives, I Don't. I think you'll love it". After the song's nearly five minutes of huge, lavish triumphalism, it's difficult to imagine Rich Forever, the recent mixtape it comes from, as just a prequel to something bigger, a mere stopover on the way to his delayed full-length.