Ms. Mimi’s class of mouselings plans to put on a production of “Peter and the Wolf.” In it, each character is identified by a musical riff played on a student’s favorite instrument. When Ms. Mimi comes to rehearsal with laryngitis, she uses these musical riffs to communicate with the mouselings. Vici tries it herself and attempts to communicate by using a recorder and no words. She ends up showing everyone that friends don’t always need words to talk to each other.