ACT I
Oh The Thinks You Can Think
Cat and Ensemble
Horton Hears a Who
Bird Girls, Horton, and Citizens of the Jungle
Biggest Blame Fool
Sour Kangaroo, Young Kangaroo, Horton, Wickersham Brothers, Bird Girls, Gertrude, Mayzie, Citizens of the Jungle, and Cat
Here on Who
The Mayor, Mrs Mayor, The Grinch, Whos, and Horton
Oh The Thinks You Can Think (reprise)
Cat and Jojo
It's Possible (In McElligot's Pool)
Jojo, The Cat, the Tropical Fish Dancers, and The Whos
How to Raise a Child
Mayor, Mrs. Mayor
Alone in the Universe
Horton, Jojo
The One Feather Tail of Miss Gertrude McFuzz
Gertrude
Amayzing Mayzie
Mayzie, Gertrude, and Bird Girls
Amayzing Gertrude
Gertrude, Bird Girls, and Cat
Monkey Around
The Wickershams
Chasing the Whos
Horton, Sour Kangaroo, Young Kangaroo, The Bad Girls, The Wickershams, Cat, Vlad Vladikoff, and The Whos
ACT II
Notice Me, Horton
Gertrude and Horton
How Lucky You Are
Mayzie and Cat
Egg, Nest, and Tree
Sour Kangaroo, Bird Girls, and Things 1 and 2
Mayzie in Palm Beach
Mayzie and Cat
Amayzing Horton
Mayzie and Horton
Alone in the Universe (Reprise)
Horton
Solla Sollew
Horton, Mr. Mayor, Mrs. Mayor, Jojo, and Ensemble
