It’s The Sound of Music.
The scene where the Von Trapp family have to escape from the Nazis. They sing their “So long, farewell” song at a festival, and two by two, or one by one in the case of little Gretl, they leave the stage and hurry away to be hidden by nuns in their abbey, until they can get away across the border to Switzerland.
Bimbo made the courgettes dance, and then put them out of the way two at a time.
He got us all to sing all the songs we could remember from the film, so all in all, it was a cheering evening.
(You can hear the courgettes singing if you click the “watch this video on youtube” link when it comes up.)