The Big Official Musical

 is the thirty-fifth episode of Crackers or Wackers.

Summary
Duncan and Isabella offer The Girls With Glasses a competition. Beth points out that Isabella was singing a song with her band once. The Girls with Glasses win the contest at the end.

Characters
Beth Bessie Duncan Isabella Katie (Cameo in crowd) Sadie (Cameo in crowd) Izzy (Cameo in crowd) Phineas (Cameo in crowd) Ferb (Cameo in crowd) Baljeet (Cameo in crowd) Penny (Cameo in crowd) Portia (Cameo in crowd) Gwen (MB) (Cameo in crowd)

Trivia

 * This episode boosts up the Duncan-Isabella Friendship.