This piano-driven number was released by Kanye West on September 10, 2010 as the second song in his "G.O.O.D. Friday" series, in which the Chicago MC releases a new tune to kick off the weekend every Friday.
The song samples Biz Markie's 1989 hit, "Just a Friend" and features Common, Pusha T, KiD CuDi, Big Sean and Charlie Wilson.
"The Night Chicago Died" was written and recorded by the British group Paper Lace. They talk about Al Capone in the song, but got a lot of details wrong - understandable since they wrote it based on gangster movies.