This short was released in connection with the 20th anniversary of Warner Brothers' first exhibition of the Vitaphone sound-on-film process on 6 August 1926. The film highlights Thomas A. Edison and Alexander Graham Bell's efforts that contributed to sound movies and acknowledges the work of Lee De Forest. Brief excerpts from the August 1926 exhibition follow. Clips are then shown from a number of Warner Brothers features, four from the 1920s, the remainder from 1946/47.
Bunny Hart
A gangster's wife, fearful that he is about to be murdered by his rivals, tips off the police to his whereabouts in order to save his life. Her husband, however, believes her reason was that she wanted him out of the way so she could have his best friend.
Little Pal
Joe Lane, un condictor de radio y compositor, descubre que el dueño del estudio, Arthur Phillips, tiene conductas inapropiadas con su esposa Katherine. Completamente enfurecido, Lane lo enfrenta en una pelea, lo que resulta en la muerte involuntaria de Phillips. Joe va a prisión por algunos años, al salir, visita a si hijo en la escuela, el cual le reuga escapar juntos.
Billy
Canine star Rin Tin Tin makes his all-talking (all-barking?) debut in Warner Bros.' Frozen River. In characteristic fashion, Rinty braves the elements to rescue heroine Jane from the villains, a gang of cutthroats and thieves.
Sonny Boy
Sonny Boy's parents are in the midst of a bitter divorce when the boy's mother talks her sister into kidnapping him because she is terrified that her husband will take the boy out of the country after the divorce.
Sonny Boy
After years of hopeful struggle, Al Stone (Jolson) is on his way. "I'm Sittin' on Top of the World", he sings to an appreciative speakeasy crowd. But, as Al discovers, getting there is one thing. Staying there is another. Singing waiter Stone gets his huge break on a magical night when his song wows a big-time producer and a gold-digging showgirl he fancies. Broadway success and marriage follow, but sure enough, hard times are on the way. Al's fickle wife abandons him, taking the beloved son he calls Sonny Boy with her. Heartbroken, Al becomes a devastated loner until friends from the speakeasy that launched his career rescue him from a life on the streets. Soon, Al is back in lights. But another crisis awaits: Sonny Boy is in the hospital and dying....