Conversation so far:
What was the band War's most popular album?
The World Is a Ghetto
Who was in the band War during the time they recorded The World Is a Ghetto?
Howard Scott, B.B. Dickerson, Lonnie Jordan, Harold Brown, Papa Dee Allen, Charles Miller, and Lee Oskar.

Question: What album was Slippin Into Darkness from?
Self-contained rewrite: What album was the band War's single Slippin Into Darkness from?