Which singer, famous for his falsetto, fronted the Four Seasons on hits like "Sherry"?

Which town in Italy's Piedmont region gives its name to the sweet sparkling wine "___ Spumante"? Which Creedence Clearwater Revival song, released in 1970, shares its title with a 1978 Nick Nolte film? Which rocker led the Blackhearts on the 1982 No. 1 hit "I Love Rock 'n' Roll"? Who led the Philadelphia soul group the Blue Notes, known for "If You Don't Know Me by Now"? Before becoming an actor, which rapper led the Funky Bunch on the 1991 hit "Good Vibrations"? Which British singer leads "the Machine", the band behind the hit "Dog Days Are Over"? Which Genesis guitarist formed the side project the Mechanics, known for "The Living Years"? Which singer rose to fame fronting the Miami Sound Machine?