Ratchet music

Dijon Isaiah McFarlane (born June 5, 1990), known professionally as Mustard (formerly DJ Mustard), is an American record producer. A frequent collaborator of fellow California-based artists YG and Ty Dolla Sign, he began his career producing singles and albums for both rappers, and has since done so for other acts in hip-hop and R&B. He first saw recognition for having produced Tyga's 2011 single "Rack City".

Mustard's production style has been described as up-tempo and club-oriented, but also rudimentary and melodic. Most of his works begin or end with the producer tag "Mustard on the beat, ho!"—a voice sample of YG (who says it at the end of "I'm Good", one of their early collaborations)—and include heavy use of synthesizers, claps, and frequent, reverberated use of a "hey!" voice clip. He has been credited as influential in the sound of both mainstream and West Coast hip-hop productions during the early-to-mid 2010s, a style he refers to as "ratchet music".