The Opportunity Please Knock Chorus - All This Talk About Freedom
//Rare Northern Soul from Chicago
“In 1967, members of the Blackstone Rangers, a notorious Gang in Chicago, collaborated with singer/composer/playwright/activist Oscar Brown Jr. to create a Musical Revue called “Opportunity Please Knock”. About eight thousand people…”
http://darkjive.com/2012/01/04/opportunity-please-knock-chorus-oscar-brown-jr-s-collaboration-with-the-blackstone-rangers/
