Oh, what a night it’ll be at the historic Chicago Theater on October 8th, when the one-and-only Frankie Valli & the Four Seasons celebrate the 50th anniversary of their first hit, the chart-topping “Sherry,” with a live performance of favorites from their massive catalog. Thanks to the volcanic success of the Tony-winning musical Jersey Boys, which chronicles the life and times of Frankie and his legendary doo-wop group, the Rock & Roll Hall of Famers are back where they belong — on stage, with the original versions of great songs like “Big Girls Don’t Cry,” “Walk Like a Man,” “Rag Doll,” “Can’t Take My Eyes Off You,” “Grease” and many more.