I have realized that in many rap songs by many different artists use the phrase, "mustard on the beat" at the begging of their rap.
Where did this originate? Why do many different DJs and rappers use this?
In my research, I have found this:
Dijon Isaiah McFarlane (born June 5, 1990), professionally known as DJ Mustard...Almost all of his productions begin or end with the tag "Mustard on the beat, hoe!"
But where and why do other rappers, such as 2-Chainz, Kid Ink, and YG just to name a few, use this phrase? What's significant about it's origin?