Before Back 2 the Lab intro “Open House” finishes, Huncho Records boss Quavo christens Street Bud “the new Migo.” That’s one hell of a welcome party for the kid, a 15-year-old sensation whose viral rise led him to sign with the Quality Control imprint. Recalling the youthful energy of his labelmate Lil Yachty’s debut some years prior, the rapper flexes and brags about all the spoils of contemporary fame on glossy tracks like “Beach House” and “Of Course.” Sheck Wes supports the back half of the minimalist trap rattle of “Rock It,” while Lil Donald lends an Auto-Tuned hook to the courtship jam “I Like U.”