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, Thing 1, Thing 2
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, Fish
Alone in the Universe
Horton, Jojo
The One Feather Tail of Miss Gertrude McFuzz" / "Amayzing Mayzie
Gertrude, Mayzie, Bird Girls
Monkey Around" / "Chasing the Whos
The Wickershams, Sour Kangaroo, The Cat, Horton, Bird Girls, Jungle Citizens, Whos
Notice Me, Horton
Gertrude, Horton
How Lucky You Are
Mayzie, The Cat
ACT II
Solla Sollew
Horton, Mr. Mayor, Mrs. Mayor, Jojo, Circus Animals
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
Oh, the Thinks You Can Think! (Finale)
Jojo, Full Company
