The term 'GLEE' is a 4-letter word that refers to a singers' group, or club. GLEE is a musical comedy-drama television series that aired on Fox in the United States for six seasons from 2009 to 2015. The show focuses on the fictitious William McKinley High School GLEE club, New Directions, which competes on the show choir competition circuit while its disparate members deal with social issues, especially regarding sexuality, race, relationships, and teamwork.