ACT I
Oh The Thinks You Can Think
The Cat, Boy, Ensemble
Horton Hears a Who
Cat, Boy, Horton, Bird Girls, Jojo, Ensemble
Biggest Blame Fool
Sour Kangaroo, Horton, Gertrude, Mayzie, Cat, Ensemble
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, Ensemble
It's Possible (Pt. 1)
Jojo, The Cat, Sea Creatures
It's Possible (Pt. 2
Jojo, The Cat, Sea Creatures
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
Amayzing Gertrude (Pt 2)
Gertrude, Ensemble
Monkey Around / Chasing the Whos
The Wickershams, Sour Kangaroo, The Cat, Horton, Bird Girls, Ensemble
Notice Me, Horton
Gertrude, Horton
How Lucky You Are
Mayzie, The Cat
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, Ensemble
Sold/ Mayzie in Palm Beach
Sour Kangaroo, Horton, Bird Girls, Jungle Citizens, Mayzie, The Cat
Mayzie at the Circus
Mayzie
Amayzing Horton
Mayzie, Horton
Alone in the Universe" (Reprise 1)
Horton
Solla Sollew
Horton, Mr. Mayor, Mrs. Mayor, Jojo, Ensemble
Gertrude/Espionage (Pt. 1)
Gertrude
