Serial Glee

Glee is a musical comedy-drama television series that airs on Fox in the United States. It focuses on the high school glee club New Directions competing on the show choir competition circuit, while its members deal with relationships, sexuality and social issues. The initial main cast encompassed club director and Spanish teacher Will Schuester (Matthew Morrison), cheerleading coach Sue Sylvester (Jane Lynch), guidance counselor Emma Pillsbury (Jayma Mays), Will's wife Terri (Jessalyn Gilsig), and eight club members played by Dianna Agron, Chris Colfer, Kevin McHale, Lea Michele, Cory Monteith, Amber Riley, Mark Salling and Jenna Ushkowitz. For the second season, formerly recurring cast members Mike O'Malley, Heather Morris and Naya Rivera were promoted to the main cast.

The series was created by Ryan Murphy, Brad Falchuk and Ian Brennan, who first conceived Glee as a film. The three write all of the show's episodes and Murphy and Falchuk serve as the show's main directors. The pilot episode was broadcast on May 19, 2009, and the first season aired from September 9, 2009 to June 8, 2010. The second season began airing on September 21, 2010, and a third season has been commissioned. Glee features on-screen performance-based musical numbers that are selected by Murphy, who aims to maintain a balance between show tunes and chart hits. Songs covered in the show are released through the iTunes Store during the week of broadcast, and a series of Glee albums have been released by Columbia Records. The music of Glee has been a commercial success, with over twenty-one million digital single sales and nine million album sales. The series' merchandise also includes DVD and Blu-ray releases, a young adult book series, an iPad application, and a karaoke game for the Wii.

The series features numerous song covers sung onscreen by the characters. Murphy is responsible for selecting all of the songs used, and strives to maintain a balance between chart hits and show tunes, as: "I want there to be something for everybody in every episode. That's a tricky mix, but that's very important — the balancing of that." Song choices are integral to script development, with Murphy explaining: "Each episode has a theme at its core. After I write the script, I will choose songs that help to move the story along." For the second season, a shift toward using more Top 40 songs was seen, in an effort to appeal more to the 18–49 demographic.

Murphy was surprised at the ease with which use of songs was approved by the record labels approached, and explained: "I think the key to it is they loved the tone of it. They loved that this show was about optimism and young kids, for the most part, reinterpreting their classics for a new audience."A minority of those approached refused to allow their music to be used, including Bryan Adams, Guns N' Roses and Coldplay; however, in June 2010, Coldplay reversed their decision, allowing Glee the rights to their catalog. Adams posted on his Twitter account that the producers of Glee had never requested permission from him and urged them to "pick up the phone". Composer and musician Billy Joel offered many of his songs for use on the show, and other artists have offered use of their songs for free. A series of Glee soundtrack albums have been released through Columbia Records. Songs featured on the show are available for digital download through iTunes up to two weeks before new episodes air, and through other digital outlets and mobile carriers a week later.

Glee is choreographed by Zach Woodlee and features four to eight production numbers per episode.Once Murphy selects a song, rights are cleared with its publishers by music supervisor P. J. Bloom, and music producer Adam Anders rearranges it for the Glee cast. Numbers are pre-recorded by the cast, while Woodlee constructs the accompanying dance moves, which are then taught to the cast and filmed. Studio recordings of tracks are then made. The process begins six to eight weeks before each episode is filmed, and can end as late as the day before filming begins. Each episode costs at least $3 million to produce, and can take up to 10 days to film as a result of the elaborate choreography. In late 2010, Bloom reported the process has been even shorter; "as quick as a few weeks". For the second season, the creators were offered listens of upcoming songs in advance by publishers and record labels, with production occurring even before song rights are cleared.