I Love Lucy (1951)

S6E4 Little Ricky Gets Stage Fright

Little Ricky is set to perform on the drums with a children's orchestra, and while his parents and their friends, the Mertzes, are filled with anxiety, Little Ricky appears relaxed—until the moment he’s supposed to play, when he starts to panic. With another performance not scheduled for another six months, Lucy decides that she needs to address his stage fright immediately.