(Jean Ross was the real Sally Bowles in the movie 'Çabaret'. Apparently she,besides being a communist, was more talented than the nite club singer portrayed by Liza Minnelli)
Film critic Jean Ross — writing as Peter Porcupine in her 1 October 1935 review for The Daily Worker — effusively praised the film: "The workers in the Soviet Union have introduced to the world an entirely new sort of humour... behind the comedy of Jazz Comedy is no dismal shadow of tragedy, but the electrifying strength and vitality and freedom of a victorious working class."
https://en.wikipedia.org/wiki/Jolly_Fellows