<Tr> <Td_colspan="2"> Next → Season 2 </Td> </Tr> <Tr> <Td_colspan="2"> List of Glee episodes </Td> </Tr> <P> The first season of the musical comedy - drama television series Glee originally aired on Fox in the United States . 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 . The season consisted of 22 episodes; the first 13 aired on Wednesdays at 9 pm (ET) and the final 9 aired on Tuesdays at 9 pm (ET). The season was executive produced by Ryan Murphy, Brad Falchuk, and Dante Di Loreto; Murphy's production company helped co-produce the series alongside 20th Century Fox . </P> <P> The season features the fictional high school show choir New Directions competing for the first time on the show choir circuit, while its members and faculty deal with sex, bullying, body image, homosexuality, teenage pregnancy, disabilities, adoption and other social issues . The central characters are glee club director Will Schuester (Matthew Morrison), cheerleading coach Sue Sylvester (Jane Lynch), Will's wife Terri (Jessalyn Gilsig), guidance counselor Emma Pillsbury (Jayma Mays), and glee club members Rachel (Lea Michele), Finn (Cory Monteith), Artie (Kevin McHale), Kurt (Chris Colfer), Mercedes (Amber Riley), Tina (Jenna Ushkowitz), Puck (Mark Salling), and Quinn (Dianna Agron). </P>

When did the first episode of glee air