What Was The Most Popular Musical Of The 1930s?

What Was The Most Popular Musical Of The 1930s? Some of the most popular musical movies that were released during the 1930s include Bright Lights (1930), 42nd Street (1933), The Gay Divorcee (1934), Top Hat (1935), Showboat (1936), Alexander’s Ragtime Band (1938), The Wizard of Oz (1939), and Babes In Arms (1939). Why were musicals