A pivotal figure in the ’90s Chicago rap scene, producer No I.D. is responsible for the bulk of Common’s early output. He went on to manage a young Kanye West and work with Jermaine Dupri and Jay-Z. He's been one of the top A&R men at Def Jam and worked as the executive vice president at Capitol Music Group. And he remains a great producer, shaping the sound of albums by Vince Staples and Vic Mensa. Here, No I.D. discusses why humility and focus are key to success, and much more.