ACT I
Oh The Thinks You Can Think
The Cat, Boy
Horton Hears a Who
Cat, Boy, Horton, Bird Girls, Jojo, Jungle Creatures
Biggest Blame Fool
Sour Kangaroo, Little 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, Cat
It's Possible
Jojo, The Cat, Fish
Alone in the Universe
Horton, Jojo
The One Feather Tail of Miss Gertrude McFuzz" / "Amayzing Mayzie
Gertrude, Mayzie, Bird Girls
Amayzing Gertrude
Gertrude
Monkey Around/Chasing the Whos
JoJo, The Cat, Wickershams, Horton, Who's, Jungle Citizens
ACT II
Notice Me Horton
Gertrude, Horton
How Lucky You Are
Mayzie, The Cat
Horton sits on the Egg/Dilemma
Horton, Gertrude, Bird Girls
Alone in the Universe" (Reprise)
Horton
Solla Sollew
Horton, Gertrude, JoJo, Cat, Mr. and Mrs Mayor, Kanga and Roo
Gertrude/Espionage
Gertrude
All for You
Gertrude, Bird Girls, The Cat
The Whos Return" / "The People Versus Horton the Elephant (Pt. 1)
Horton, Mr. Mayor, Mrs. Mayor, Jojo, Gertrude, Sour Kangaroo, The Wickershams, The Cat, Yertle the Turtle, Bird Girls, Courtroom
The People Versus Horton the Elephant (Pt. 2)
Horton, Yertle the Turtle, The Cat, The Wickershams, Bird Girls, Sour Kangaroo, Mr. Mayor, Mrs. Mayor, Jojo, The Whos, Courtroom
