Carl's Concerto

Summary
Carl has agreed to play the accordion for George's puppet show. But his routines are getting in the way of rehearsals. Now George must decide: keep Carl and risk the show, or replace Carl and risk his friendship?

Main characters

 * Carl
 * Rattles
 * George
 * Arthur
 * Binky
 * Buster

Minor characters

 * D.W.
 * Bud
 * Mr. Ratburn
 * Mrs. Gould
 * Wally

Background characters

 * Muffy
 * Francine
 * Sue Ellen
 * Brain
 * David Read
 * Jane Read
 * Mrs. Lundgren
 * Neal Lundgren
 * Ladonna
 * Rufus Compson
 * Cisely Compson
 * Madison
 * Molly
 * Cheikh
 * Cheikh's father
 * Cheikh's mother
 * Timmy and Tommy Tibble

Production notes

 * This episode's existence has been known on IMDb since at least July 2014.