Professor Owl gives a lecture on the evolution of Western musical instruments, starting with the advent of rudimentary brass, woodwind, string and percussion instruments by ancient cave dwellers at the dawn of history.

Come along with Donald Duck as he visits one of nature's masterpieces. After a little ragtime rain dance, Donald strikes up a conversation with himself at Echo Cliff, then teeters along the edge of a precarious trail while riding a sure-footed burrow. It's a tough job for park ranger J. Audubon Woodlore to keep Donald in check, but it gets even tougher when they run afoul of a napping mountain lion.

Chip 'n Dale live next door to a zoo and spot the elephant's stash of peanuts. They go after them, but both the elephant and his keeper, Donald, are too clever. Then the boys realized the visitors throw peanuts, so they put on a song-and-dance act. Then they paint themselves white and pose as albino chipmunks.

A retelling of the classic Canadian / American tall tale of the enormous lumberjack and his loyal companion, an equally huge blue ox.

A small house has to try to compete with progress and the encroaching press of the big city.

An owl teaches his class full of birds about melody. It's all around in nature. Only birds and man can sing; man "sings" even when he speaks. We see a quick survey of the stages of life, as captured by songs: the alphabet song for primary school, Here Comes the Bride, The Old Gray Mare, etc. Some inspirations for song are outlined in song: love, sailing, trains, the West, motherhood, etc., but "we never sing about brains." Finally, an example of how a simple melody can be expanded into a symphony: an elaborate version of the simple tune that opened the lesson

Flannery, a railway agent does everything by the book. He gets into a scrape with a customer, McMorehouse, who wants to pay 44 cents freight for two guinea pigs which he considers pets. Flannery, however, considers them pigs (freight 48 cents), a decision he begins to regret when the animals begin to reproduce.

Two stylized nursery rhymes are shown. First is "The House That Jack Built" as told with a variety of characters composed of letters that spell out their names (Example: the cow is made up of an intertwined C, O, and W). Next is "Old MacDonald Had a Band" (no, not farm) in which Old MacDonald and his band give way with a hot jazz number (even his animals play instruments). The piece comes to an end when Old MacDonald's wife is tired of doing all the housework and gives him a swift whack on his head with her rolling pin.

We learn the true stories behind various nursery rhymes. Little Jack Horner: a servant to a city official was delivering a present to King Henry VIII, baked, as was the custom of the time, in a pie. The present was the deed to a valuable estate, which Horner stole. Mary, Mary, Quite Contrary: Mary Stuart brought "quite contrary" French style to the Scottish court. After a series of disastrous romances, she was jailed; the jailer's son, captivated by her, helped her escape. After a brief but disastrous attempted coup, she fled to England, where her sister, Queen Elizabeth, soon grew jealous and had her imprisoned. London Bridge: The bridge, finished in 1209, was soon lined by shops with luxury apartments upstairs, turning into a popular commercial and cultural zone. The Great Fire that broke out in 1666 spread to the bridge, but the houses were rebuilt. Over the ages, things decayed. In 1823, things finally got bad enough that the bridge was demolished and replaced.

Animated industrial movie about the steel industry.