1. Jay-Z "Hard Knock Life (Ghetto Anthem)" (1998)
Album: Vol. 2... Hard Knock Life
Producer: The 45 King
A bunch of chanting orphans in the musical film Annie brought Jay-Z his most memorable hook. The 45 King grabbed the kids' chorus about mopping floors in an orphanage and retooled it for Jay-Z's ode to hood life. It's one of the greatest of juxtapositions in rap to date. Only Hov.
Sample: Andrea McArdle "It's the Hard-Knock Life" (1977)