LL Cool J "Mama Said Knock You Out" (1990)

Album: Mama Said Knock You Out
Producer: Marley Marl, Bobby "Bobcat" Ervin

Inspired by a conversation LL had with his grandmother after hip-hop fans thought he fell off with panned LP, Walking Like A Panther, "Mama" has gone on to become one of the great "comeback" songs in history. It's an underdog anthem coming from a rapper who was one at the time, and most notably, shows and proves when it comes to putting yourself back on top after a misstep.