The 4 Seasons: Who is the only drummer to ever be an actual member and what else made him unique to the group?

Question

Yes, I know that Frankie played congas with The Four Lovers but The Seasons never had a drummer as an actual member until well into their career.

Answer 1

I believe the name you're looking for is Gerry Polci. What made him unique, was that he took over the role as lead singer when Franki Valli decided to leave the group to pursue his solo career.

Answer 2

Frankie Valli sang too