"81" is a relentless, gritty, and hard-hitting street anthem by Memphis rap titan Yo Gotti (Mario Mims). Released as a standout track during his prolific run of street-defining mixtapes, the song serves as a masterclass in hustle rap, detailing the high-stakes logistics of interstate drug trafficking, unyielding operational discipline, and the sheer grit required to build an independent empire from the ground up in Memphis.