Oh, What A Night: Frankie Valli & the Four Seasons to perform in Amp for third time, close out 2018 season by José Valle on August 24, 2018 share Oh, what a night: Frankie Valli & the Four Seasons are making their way back to Chautauqua for a third time. The group was previously on the grounds in 1987 and 2004. And following shows