Which singer was backed by the Revolution on the 1984 album "Purple Rain"?

Which singer rose to fame fronting the Miami Sound Machine? Which Minneapolis superstar was backed by the New Power Generation in the 1990s? Which late-night TV host co-owned the racing team that won the 2004 Indianapolis 500? Which pianist and singer led the Range on the 1986 hit "The Way It Is"? In what year did King John agree to the Magna Carta at Runnymede? Which "Golden Girls" star won the Emmy for Lead Actress in a Comedy Series in 1988? In the 1984 horror film "C.H.U.D.," mutant creatures lurk in the sewers of which city? Which Motown group had a 1966 hit with "Ain't Too Proud to Beg"?