Lisa becomes depressed, which begins to affect her performance in school. Neither Marge nor Homer are able to make Lisa happier. One night, she hears distant Jazz music and sneaks out of her room to follow it. She meets Bleeding Gums Murphy, who teaches her how to express her music through the saxophone. When Marge drops Lisa off at school the next day, she suggests that Lisa smile no matter how she feels. However, Marge sees that Lisa is being denied her creativity and realizes that that’s what is disappointing her. Marge tells Lisa to just be herself, and the entire family go to see Murphy perform at a local Jazz club.
Guest star: Ron Taylor.