A good animal fact has a short shelf life. Heard once, it tends to evaporate. Sung once, it tends to stick — and that small difference is the entire premise behind The Learning Castle, a YouTube channel that has been turning natural-world trivia into music since September 2021. Across the 71 public uploads listed in November 2026, the same pattern repeats: a creature is chosen, a handful of details are compressed into rhyming lines, and a musical style is wrapped around the result.

The channel’s own description sets out the method without much fuss. The person behind it, who signs the About text as ~Queen Angelina (a.k.a. Angela V. Woodhull, Ph.D.), explains that she takes cool facts — mostly about animals, insects and sea marine creatures — rhymes them, and sets them to music. Everything else on the channel is a variation on that three-step recipe, from short sing-alongs to longer full-lesson episodes.

Step One: Choosing a Creature Worth Singing About

A catalogue drawn from insects, oceans and back gardens

Look down the list of video titles and the subject range becomes obvious. Insects get serious attention: Spiders!, ANTS!, BEETLES!, Roaches!, The Ladybug Song!, Fireflies! – Cool Latin music!, Dragonflies!, Grasshopper’s Love Song, The Praying Mantis Song! and Wiggly Worms!. Sea life is just as well represented, with The Whales’ Love Song!, Whales! – Jazzy Love Song, THE MYSTERY SQUID SONG!, Starfish Story Song!, Sharks!, Octopus! — Fact-Teaching Song, RIDING ON A LOBSTER TAIL!, PSYCHEDELIC FROG FISH! and THE MAGICAL FROGFISH BOOGIE WOOGIE SONG!.

Larger land animals appear too — THE GIRAFFE SONG! (Camelopardalis), The Rhino Song, Kangaroos!, THE SHEEP SONG!, cow song full, ALLIGATORS! — alongside smaller creatures closer to home, such as Gerbils! — Funny Song, CAT SONG FOR KIDS! and Precocious Kitty!. A few subjects clearly earn a return visit: alligators, whales and monkeys each appear in more than one title, which suggests a creature is not written off after a single song.

What makes a fact survive the trip into a lyric

The selection logic visible across the catalogue favours a certain kind of detail. The creature needs a trait a listener can picture — the grip of an octopus arm, the flicker of a firefly, the way a giraffe’s scientific name sounds when it is sung out loud. It helps if the animal carries a little drama: SCARY VAMPIRE BATS! SPOOKY SONG! and Roaches! lean into the shiver factor, while LICE ARE NOT SO NICE! and DON’T WANT NO CHIGGER UNDER MY SKIN! handle the less glamorous side of the natural world in the same rhyme-and-music format. Because the goal is a fact a person can recall later, the useful material is usually a striking feature rather than a list of statistics. Animals, insects and sea creatures are the channel’s stated core, but the same approach stretches to maths songs such as the PEMDAS pair, everyday songs like The Furniture Song! and seasonal titles such as THE SANTA CLAUS ROOSTER! — proof that the method is portable.

Step Two: Rhyme Turns a Fact Into Something Retrievable

A rhyme does two jobs at once. It gives the ear a pattern to predict, and it links a new piece of information to a sound the listener already expects — which is why a fact embedded in a couplet is easier to carry home than the same fact delivered flat. On The Learning Castle, the writing stage is where the factual content and the singable line have to be made to fit each other. Angela Woodhull describes the process simply as taking cool facts, rhyming them, and setting them to music, and the titles reflect that compression: a subject, a hook and a musical direction, often in a single phrase.

Song, fact and quiz in the same package

The channel’s stated aim is a song that both children and adults can enjoy. Its About text acknowledges that many grown-ups find children’s songs annoying, and sets out the hope that this style appeals to “kids” of all ages. That ambition shapes the wording: the lyrics have to be simple enough for a preschooler or an ESL learner to follow, but not so thin that a parent reaches for the skip button. Some titles make the learning structure explicit — Facts, Song and Fun Quiz About Monkeys and Octopus! — Fact-Teaching Song announce their intent in the name — while others simply let the melody do the persuading.

Who the rhymes are written for

The channel names its audiences directly: ESL learners, preschoolers, ADHD students, late-start readers, homeschoolers and families looking for a sing-along. Rhyme and repetition serve those groups in practical ways — repeated sounds help a new English speaker hear stress and word endings, and a chorus gives a hesitant reader a line to join in with. For each song and each full episode, the channel also points viewers to a free accompanying lesson on Teachers Pay Teachers under The Learning Castle, so a parent or teacher can pair the listening with written follow-up. The music is the entry point; the worksheet is where the fact gets checked.

Step Three: Give the Fact a Groove

The third step is where an animal song stops sounding like a school assembly and starts sounding like something a family might play in the car. Genre is used as a mood cue, and the titles wear their influences openly: Fireflies! is billed as cool Latin music, Dragonflies! as a James Bond-style groovy number, THE MAGICAL FROGFISH BOOGIE WOOGIE SONG! borrows a boogie-woogie bounce, Whales! – Jazzy Love Song goes for jazz, and Listen to The Voice That’s Inside of You! — Cool Reggae Song reaches for reggae. Contrast matters too: MONSTERS AND ROBOTS! and the spooky vampire bat song sit at a different temperature from I’M HAPPY! or Happy Face Song!.

Why the style carries the subject

A genre does more than decorate. A spy-movie riff matches a darting dragonfly; a Latin groove fits a flickering, restless firefly; a boogie-woogie pulse suits a strange-looking frogfish better than a lullaby would. When the music and the animal share a personality, the listener absorbs the creature’s character before a single fact is consciously registered. That is also how the channel reaches adults — a groove with a bit of swagger is easier for a grown-up to tolerate on repeat than a generic nursery tune, and repeat listening is exactly what makes a fact stay.

From short sing-alongs to full episodes

The catalogue runs on two tracks. Shorter titles are single-song deliveries, while longer uploads such as Dolphin Episode, Fly Episode, Camping Episode, Grasshopper Recording and Spot and Me expand the same material into fuller lesson videos, each with its own free accompanying lesson as the channel states. The finished material is also built to travel: the channel says the creator is available for live performances at public libraries, schools and nursing homes, which means the same rhymed animal facts can be sung from a stage as easily as streamed at home. What begins as a cool fact about a beetle or a whale ends up as a chorus — and the chorus is what carries the fact back out into the world.