40 Years Ago: Sly Stone Gets Married in Front of 21,000 Fans at Madison Square Garden40 Years Ago: Sly Stone Gets Married in Front of 21,000 Fans at Madison Square GardenFunk legend Sly Stone got married in front of 21,000 fans at New York City's famed Madison Square Garden on June 5, 1974. Matthew WilkeningMatthew Wilkening