Act 1
Oh, The Thinks You Can Think
Cat, Jojo, Full Company
Horton Hears a Who
Cat, Jojo, Horton, Bird Girls, Jungle Citizens, Sour Kangaroo, Young Kangaroo, Thing 1, Thing 2, Mr. Mayor, Mrs. Mayor, Whos
Biggest Blame Fool
Sour Kangaroo, Young Kangaroo, Horton, Wickershams, Bird Girls, Jungle Citizens, Gertrude, Mayzie, Cat, Thing 1, Thing 2
Biggest Blame Fool Playoff / Gertrude McFuzz
Sour Kangaroo, Jungle Citizens, Wickershams, Gertrude, Cat, Mr. Mayor, Mrs. Mayor
Here on Who
Mr. Mayor, Mrs. Mayor, JoJo, Horton, Whos, Grinch
Meet Jojo the Who
Mr. Mayor, Mrs. Mayor
How to Raise a Child
Mr. Mayor, Mrs. Mayor, Jojo, Cat, Whos
Oh, The Thinks You Can Think (reprise)
Cat, Jojo
It's Possible (Pt. 1)
Jojo, Cat, Fish, Thing 1, Thing 2, Full Company
It's Possible (Pt. 2)
Jojo, Cat, Fish, Lorax, Thing 1, Thing 2, Full Company
Alone in the Universe
Horton, Jojo
The One Feather Tail of Miss Gertrude McFuzz / Amayzing Mayzie
Gertrude, Mayzie, Bird Girls
Amazing Gertrude (Pt. 1)
Gertrude, Bird Girls
Amayzing Gertrude (Pt. 2)
Gertrude, Dr. Dake, Lorax, Bird Girls
Monkey Around / Chasing the Whos
Jojo, Wickershams, Sour Kangaroo, Young Kangaroo, Cat, Horton, Bird Girls, Jungle Citizens, Whos, Vlad Vladikoff
Notice Me, Horton
Gertrude, Horton
How Lucky You Are
Mayzie, Cat, Thing 1, Thing 2
