ACT I
Oh The Thinks You Can Think
The Cat, Ensemble
Horton Hears a Who
Cat, Horton, Bird Girls, Jojo, Jungle Creatures
Biggest Blame Fool
Sour Kangaroo, Young Kangaroo, Horton, Wickersham Brothers, Bird Girls, Jungle Creatures, Gertrude, Mayzie, Cat
Here on Who
Mayor, Mrs. Mayor, JoJo, Horton, The Whos
How to Raise a Child
Mayor, Mrs. Mayor
Oh The Thinks You Can Think (reprise)
Jojo, The Cat
It's Possible (Pt. 1)
Jojo, The Cat, Ensemble
It's Possible (Pt. 2)
Jojo, The Cat, Ensemble
Alone in the Universe
Horton, Jojo
The One Feather Tail of Miss Gertrude McFuzz" / "Amayzing Mayzie
Gertrude, Mayzie, Bird Girls
Amayzing Gertrude (Pt. 1)
Gertrude
Amazing Gertrude (Pt. 2)
Gertrude, Bird Girls, The Cat
Monkey Around" / "Chasing the Whos
The Wickershams, Sour Kangaroo, Young Kangaroo, The Cat, Horton, Bird Girls, Jungle Citizens, Whos
Notice Me, Horton
Gertrude, Horton
How Lucky You Are
Mayzie, The Cat. Horton
Mayzie's Exit" / "Horton Sits on the Egg" / "Dilemma" / "Hunters
Horton, Gertrude, Bird Girls
ACT II
Egg, Nest, and Tree
Sour Kangaroo, Horton, Hunters, Bird Girls, Jungle Citizens
Sold" / "Mayzie in Palm Beach
Sour Kangaroo, Horton, Bird Girls, Jungle Citizens, Mayzie, The Cat
Mayzie at the Circus
Mayzie. Who Citizens
Amayzing Horton
Mayzie, Horton
Alone in the Universe" (Reprise 1)
Horton
