Which play and film was adapted from a story by Christopher Isherwood and later adapted as musical and film "Cabaret"?

Question

Answer 1

I Am A Camera
The story by Christopher Isherwood was "Sally Bowles" in the 1939 book "Goodbye To Berlin". In 1961 it was adapted into the stage play "I Am A Camera" by John van Druten. The film, "Cabaret" (1972), starred Liza Minnelli, Michael York and Joel Grey.