This is believed to be the first cartoon to use extensive synchronized speech.
This plotless demo reel would launch what would become the first of almost 500 cartoons produced by Leon Schlesinger during the next two decades.
Bosko makes his first appearance in this demo reel. He makes his official, commercial debut in his next film, Sinkin' in the Bathtub (1930).
This is a pilot film pitched to Hollywood distributors by Hugh Harman and Rudolf Ising in 1929. Leon Schlesinger was so impressed that he subsequently produced and sold a series of Bosko cartoons to Warner Bros., thus creating the "Looney Tunes" series.