In an interview earlier this week with NPR, producer Mike Will Made-It revealed that he originally crafted the beat that became Kendrick Lamar's "Humble" for Gucci Mane.

"With "HUMBLE.," I knew that beat was going to capture a moment. It just felt real urgent. I made that beat [last year] when Gucci Mane was getting out of jail; I made it with him in mind. I was just thinking, damn, Gucci's about to come home; it's got to be something urgent that's just going to take over the radio. And I felt like that beat was that. I ended up not doing it with Gucci and I let Kendrick hear it," Mike says.

Source: npr.org