So Long, Scarecrow is titled in reference to which 1939 musical fantasy film?
So Long, Scarecrow:  Its title is a reference to "The Wizard of Oz": in lead vocalist Jessicka's view, the film's Scarecrow is a metaphor for the band itself; the character's initial lack of and search for a brain, she explains, parallels Scarling. The Wizard of Oz (1939 film): The Wizard of Oz is a 1939 American musical fantasy film produced by Metro-Goldwyn-Mayer.
The Wizard of Oz