The children's chorus was Cassandra Beauvais, Kyra Klaassen, and Sophie Tenke Tarnow in the season 1 segments, while newer ones were Piper Ainsworth, Juliet and Alison Beckwith, and Emma Trail, and then Jackson Ainsworth replaced Emma. Original cast was Helen Farmer with either Lyneya Bipatnath or Akela Yimtau, and newer cast was Pay Chen with either Paige Meunier, Cian Davies, or Joshua Kilimnik. Original poems were by Dennis Lee, while newer ones featured Jeff Sweeney's poems. This segment featured an actress and a child dressed in purple and offscreen children known as their friends. Newer segments featured Rachel Harrison (credited as Rachel Cook) as Captain Huppette, Robbie Nino Rementilla (credited sometimes as Robbie Nino) as Metito, Michelle Black as Pippa, and Michael Caldwell as Rufus, though Bianca did appear in 2006. The original cast was David Danzon as Captain Hup, Anand Rajaram as Ludsu, Sylvie Bouchard as Bianca, and Ray Hogg as Krankovitch. The order goes a man with a falsetto voice, a woman and then a man with regular voice. At the end, Captain say Now you can action and then a rhyme.
After three directions, everyone does it together twice. Metito, hook the fingers HUP! Pippa, hook the fingers HUP!), and then the viewer gets to try. Captain Hup or Huppette give directions to three other dancer (ie. from dance troupe CORPUS, and they follow directions in a military style. This featured four dancers wearing blue spandex outfits and green shoes, knee pads, elbow pads and females wearing skirt. The Do Whas were voiced by Jackson and Piper Ainsworth, Cassandra Beauvais, and Hannah Roblin in the original segments, while newer segments were voiced by Alison and Juliet Beck with, Emma Trail, and Piper Ainsworth. John was replaced by Kellylee Evans and later, Melissa was by Starr Domingue, before she returned in Season 3. The Four Tones were Melissa Stylianou, Alison Neale, John Campbell and Chantelle Wilson for Season 1. The children are to Do what the Do-Wha's do! in which the Do-Whas say Do what we do. The Four Tones and Do-Whas invite the children to sing along. Segments Singing Segment (Purple Backdrop)
Rain Storm / Push / Travel Plans (The Rickety Ship) / Here Kitty Kitty.Bananas on My Cereal / Spreading / Nasty Nora / On a Train.Building / Riding on a Camel / Pete's Feet / Rhythms.Glue / Wooster the Rooster / Bird Watching / Hair.Penguin Pete / At the Farm / Shopping / Hide.Rhythm Sticks / Tongue Exercises / Shake / Shake Shake Shake to the Music.Do What the Do Whas Do / Running / At the Playground / Poor Chicken Little!.Folding / At the Orchard / My Snuggly Blanket / Marjorie Meech.Clocks / Lucky Me! / Miss Spider and Miss Bumblebee / Make Waves.Scarecrow Boogie / Frank Fish / House Sounds / Skiing.Breathing / Dizzy Debbie / Going Places / Skip Through a Puddle.Swing / Funny Rhythms 2 / Diggity Doggity / Butterfly Lullaby.Haircut / At the Fire Station / Pizza Pie / Lifting.Celebrate / Fruit Salad / Skating / Willoughby Wallaby Woo.Doddlin' Dan / Body Beats / Twisting / Anna Banana.Four-Legged, Hairy-Legged Baby / Super Duper Dinklepuss / Talking Clothes / Making Circles.Swim / The Dreadful Doings of Jelly Belly / Hands / Rock-a-Bye Moon.Throw / The Little Old Man / Kelly Kellog / Factory.Rocking Chair / Rodeo Roy / Jumping / Soup.March / Chocolate Bar / Sing to the Morning Light / I Need A Snack.Four Little Beetle Bugs / Moving on the Floor / Goo / Pets.Funny Rhythms / Tick Tock / Goober and Guck / Speeding.Balance / Everybody Knows I Love My Toes / Marching Band / Hugh Hugh.4 Square consists of 39 15-minute episodes and 3 seasons.