If you are watching this movie on youtube, Ginger comes on and sings a song at 14:30 and another one shortly after. Don't waste your time with what comes before or after--the sub-vaudeville gags or the chorus routines in which some of the girls clearly missed a few rehearsals and one seems to be waving to a friend in the wings.
Ginger is adorable, winsome, and sweet. However, she was not yet the Ginger we know--she sounds too much like Helen Kane, the pouty, boop-boop-a-doop girl. Interesting to see the persona from which she developed and became more spirited, as well as turning into a 1930s platinum blonde.