Act One

• Overture – Orchestra • Oh, the Thinks You Can Think! – Company (except The Grinch and Vlad Vladikoff) • Our Story Begins – The Cat and JoJo • Horton Hears a Who! – Bird Girls, Horton and Citizens of the Jungle of Nool • Biggest Blame Fool – Sour Kangaroo, Young Kangaroo, Horton, Wickersham Brothers, Bird Girls, Gertrude McFuzz, Mayzie LaBird, Citizens of the Jungle, Jojo and The Cat • Here on Who – The Mayor, Mrs. Mayor, The Grinch, Whos, Schmitz and Horton • A Day for the Cat in the Hat – The Cat, Jojo and Cat's Helpers • It's Possible (In McElligot's Pool) – JoJo, The Cat and Fish • How to Raise a Child – The Mayor and Mrs. Mayor • The Military – General Genghis Khan Schmitz, The Mayor, Mrs. Mayor, JoJo and Cadets • Alone in the Universe – Horton and JoJo • The One Feather Tail of Miss Gertrude McFuzz – Gertrude • Amayzing Mayzie – Mayzie LaBird, Gertrude and the Bird Girls • Amazing Gertrude – Gertrude and Bird Girls • Monkey Around – Wickersham Brothers and Horton • Chasing the Whos – Horton, Sour Kangaroo, Young Kangaroo, Bird Girls, Wickersham Brothers, The Cat, Vlad Vladikoff and Whos • How Lucky You Are – The Cat and Whos • Notice Me, Horton – Gertrude McFuzz and Horton • How Lucky You Are (Reprise) – Mayzie LaBird and Horton • Horton Sits on the Egg – Full Company

Act Two

• Entr'acte – Orchestra • Our Story Resumes – The Cat, JoJo, Horton, Gertrude McFuzz, General Genghis Khan Schmitz, Bird Girls and Hunters • Egg, Nest, and Tree – Sour Kangaroo, Bird Girls, Wickersham Brothers, The Cat and Hunters • The Circus McGurkus – The Cat, Horton and Circus Animals • Mayzie in Palm Beach – Mayzie LaBird, The Cat and Horton • Amayzing Horton – Mayzie LaBird and Horton • Alone in the Universe (Reprise) – Horton • Solla Sollew – Horton, The Mayor, Mrs. Mayor, JoJo, and Circus McGurkus Animals and Performers • The Butter Battle – JoJo, General Genghis Khan Schmitz and Cadets • The Grinch Carved the Roast Beast – The Grinch, The Mayor, Mrs. Mayor, Cindy Lou Who, Max the Dog, Schmitz and Whos • Havin' a Hunch – The Cat, JoJo, Hunches and Cat's Helpers • All for You – Gertrude, Horton and Bird Girls • The People Versus Horton the Elephant – Principals (except Mayzie and Schmitz), Wickershams, Yertle, Bird Girls, Young Kangaroo • Finale / Oh, the Thinks You Can Think! – Full Company • Curtain Call / Green Eggs and Ham – Full Company