Dr. Dre opened up the performance behind a mock mixing board, a nod to the root of his celebrity: the ability to mastermind sound. For the next 12 minutes, vivid and thumping hits followed, including “The Next Episode,” a wiry between Dr. Dre and Snoop Dogg, wearing a blue bandanna-themed sweatsuit; “California Love” (mercifully, delivered without a hologram of Tupac Shakur, as some had rumored); Eminem’s stadium-shaking “Lose Yourself”; Lamar’s pugnacious and proud “Alright”; and a pair of songs from Mary J. Blige, the lone singer on the bill.
