I was about twelve when I started writing my own rhymes. One day in junior high, there was this lone kid, wearing a knapsack, walking about twenty or thirty feet in front of me. It was just the two of us in the hallway. He was kind of diddy boppin’ and singing his version of the children’s song “This Old Man”—”This DJ, he gets down, mixing records while they go round.” I couldn’t see his face, but I could hear the echo in the hallway. It was as if he was in another dimension, in slow motion, like a dream. But the way he did it, I was, like, “I wanna do that right now!” After that, I was writing, writing, writing. At fourteen, I started sending out demo tapes.

– L.L. Cool J.

Click through to check out GQ’s excerpt of the new oral history of Def Jam by Bill Adler and Dan Charnas. Easter Egg: Among friends and family, LL Cool J goes by his middle name, “Todd.”