DJ Mustard is the stage name of Dijon Isaiah McFarlane, a rapper and producer who worked with Lamar GNX alongside Jack Antonoff, SZA, and more. Most notably, however, Mustard worked on Lamar’s mega-viral and controversial hit “Not Like Us,” a diss track fueling Lamar’s longtime rivalry with Drake.

Kendrick Lamar dropped his surprise sixth album, “GNX,” setting fans online ablaze with excitement and praise. On “tv off,” the seventh track on his album, Lamar name-drops Mustard, who produced the song along with Antonoff,

Kendrick Lamar's explicit call out of his producer Mustard on one of his new tracks has some wondering why he said the word on the beat.