I Haven't Got A Hat is a 1935 two-strip Tecnicolor animated cartoon produced by Leon Schlesinger Productions.
There is a school recital on, and many children participate, including Beans, Ham and Ex, and Porky Pig.
This is Porky Pig, Beans, Little Kitty and Oliver's debut appearance.
Struggling against other animation studios, WB were desperate to find a character as successful, as other studio's mascots (such as Mickey Mouse, Popeye, Bosko and Buddy not being as popular), and so Friz designed several potential characters.
Many of the characters used in this cartoon were given their own short, in order to see if they were a good recurring character, but WB particularly focused on Beans, to no avail. Tex Avery decided to focus on Porky Pig, and Porky became their first big star.
In this short, Beans and Oliver didn't talk in their first appearances.