Glee's pilot was broadcasted in the late 2000s.
Glee is an American musical comedy-drama television series that aired on the Fox network in the United States from May 19 , 2009 , to March 20 , 2015 . During its first season , Glee received generally favorable reviews from critics , with Metacritic 's weighted average of 77 out of 100 based on eighteen critical reviews . Glee (season 1) . The pilot episode was broadcast as an advanced preview of the series on May 19 , 2009 , with the remainder of the season airing between September 9 , 2009 and June 8 , 2010 .