So here we are. And audience of at least 90% a certain age lapping up the Four Seasons songbook like Spring chickens at a midsummer party. But this is much more than a nostalgia-fest of Frankie Valli greatest hits. The everyday story of a dysfunctional foursome is told retrospectively from four different points of view and often emphasising a dark side away from the spotlight of glitz and glamour.
Inevitably the first consideration on press night was how the late replacement as Nurse Ratched, Jenny Livsey, would cope after only a couple of days notice. The answer is she fitted seamlessly into a first-rate ensemble and you hardly noticed she was still on the book. It helps that a nurse carrying a folder of notes looks quite natural.
The last few days have been a bit of a rollercoaster ride for actress Jenny Livsey, who stepped in at the last minute to replace an injured cast member in a starring role in One Flew Over the Cuckoo's Nest at the Crucible Theatre, Sheffield.