Little Annie Rooney is a short animated film that is part of the Fleischer Studios Screen Songs series.
She replies "I'm so Happy", which is similar to Betty Boop's Birthday Party.
The background image for the first part of the sing-along is a design of shamrocks and smoking pipes, to indicate an Irish theme.
The third segment returns to cartoon animation interacting with the lyrics in the Fleischer Studios style of the time.
At the end, Bimbo and Little Annie Rooney are married in a church, then the final part of the chorus is sung by the faces of babies who quickly age to adult men then old men, with the lyrics "Little Annie Rooney, is our grand-ma", an indication that the pop-song which debuted over 40 years earlier was an old standard familiar to generations.