Question: In total, how many episodes did the first season of Glee have?
About the article "Glee (TV series)", section "Merchandise".

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"Glee" is an American musical comedy-drama television series airing on Fox.
It was created by Ryan Murphy, Brad Falchuk, and Ian Brennan.
The pilot episode of the show was broadcast on May 19, 2009, and the rest of the season began on September 9, 2009.
Fox initially ordered thirteen episodes of "Glee", picking the show up for a full season on September 21, 2009, ordering nine more episodes.
The remainder of the first season aired for nine consecutive weeks starting on April 13, 2010 and ending on June 8, 2010, when the season finale was broadcast.
The series completed its fourth season on May 9, 2013.
The series focuses on a high school show choir, also known as a glee club, in the fictional William McKinley High School in Lima, Ohio.
Will Schuester (Matthew Morrison) takes over the glee club after the former teacher (Stephen Tobolowsky) is fired for inappropriate contact with a male student.
With a rag-tag group of misfit teenagers, Will attempts to restore the glee club to its former glory while tending to his developing feelings for his co-worker Emma (Jayma Mays), as well as defending the glee club's existence from the conniving cheerleading coach Sue Sylvester (Jane Lynch).
A major focus of the series is the students in the glee club: their relationships as couples, their love of singing and desire for popularity coming into conflict due to their membership in the low-status club, and the many vicissitudes of life in high school and as a teenager., a total of 102 episodes of "Glee" have aired. 
Mash-ups have been featured on many episodes of the popular American TV series "Glee".
They first appeared in the episode "Vitamin D", which featured mashing up Bon Jovi's "It's My Life" with Usher's "Confessions Part II" and Beyoncé Knowles's "Halo" with "Walking on Sunshine" by Katrina and the Waves. 
Three soundtrack albums were released to accompany "Glee" first season: ', ' and '.
Two extended plays (EP) accompanied the episodes "The Power of Madonna" and "Journey to Regionals": ' and ' respectively.
"Glee: The Music, The Complete Season One", a compilation album featuring all 100 studio recordings from the first season, was released exclusively to the iTunes Store.
Five soundtrack albums were released to accompany "Glee" second season: ', featuring Christmas-themed songs, and ', were both released in November 2010; ', ', and ' were 2011 releases, in March, April, and May, respectively.
An EP entitled "" was released to accompany the Halloween episode, "The Rocky Horror Glee Show".
Two EPs were released exclusively at the Target discount chain: "Glee: The Music, Love Songs" in the last week of 2010, and "Glee: The Music, Dance Party" in early September 2011.
"Glee" has been released on several DVD and Blu-ray box-sets.
"Glee – Pilot Episode: Director's Cut" features the pilot episode and a preview of the second episode, "Showmance".
"Glee – Volume 1: Road to Sectionals" contains the first thirteen episodes of season one, and "Glee – Volume 2: Road to Regionals" contains the final nine episodes of the first season.
"Glee – The Complete First Season" was released on September 13, 2010.
Three boxed sets were released for the second season: "Glee Season 2: Volume 1" containing the first ten episodes on January 25, 2011, and both "Glee Season 2: Volume 2" with the final twelve episode and "Glee: The Complete Second Season" with all twenty-two on September 13, 2011.
All three were released on DVD; only the complete season is available on Blu-ray.
Little, Brown Books is in the process of publishing five "Glee"–related young adult novels, which are being developed in collaboration with the show's producers and writers.
The first three novels have been written by Sophia Lowell; the first, "Glee: The Beginning", was released in August 2010 and serves as a prequel to the events of the television series.
Subsequent novels include "Glee: Foreign Exchange", released in February 2011, and "Glee: Summer Break", released in July 2011.
Twentieth Century Fox Consumer Products have plans for a line of "Glee"–related merchandise including games, electrical products, greeting cards, apparel and stationery.
Macy's carry a line of "Glee"–related clothing, and Claire's stock accessories.
The season was produced by 20th Century Fox Television and Ryan Murphy Television, and was aired on Fox in the US.
The executive producers Dante Di Loreto and series creators Ryan Murphy and Brad Falchuk, with John Peter Kousas and creator Ian Brennan acting as co-executive producers.
The first two episodes were co-written by Murphy, Falchuk and Brennan; all other episodes were written by them individually.
Murphy and Falchuk also directed several episodes, while other episodes were directed by Elodie Keene, John Scott, Paris Barclay, Bill D'Elia and Alfonso Gomez-Rejon.
Joss Whedon guest-directed the episode "Dream On".
The pilot episode was broadcast as a preview of the season on May 19, 2009.
The series returned on September 9, 2009, and after three episodes, Fox picked "Glee" up for a full season on September 21, 2009.
The initial run of thirteen episodes aired until December 9, 2009, with the series then taking a mid-season break until April 13, 2010.
After airing on Wednesdays at 9 pm (ET), the first season moved to Tuesdays in the same timeslot for the final nine episodes.
The commissioning of a second season was announced on January 11, 2010, with the production of a third season announced on May 23, 2010.
The series features numerous musical cover versions performed on-screen by the characters.
At the beginning of the season, Murphy intended for the performances to remain reality-based, as opposed to having the characters spontaneously burst into song.
As the season progressed, however, "Glee" began to utilize fantasy sequences, with paraplegic character Artie imagining himself dancing to "The Safety Dance", and six separate characters performing a fantasy version of "Like a Virgin".
The first thirteen episodes of the season averaged five songs per episode.
For the final nine episodes, the number of performances increased to eight.
Murphy believes that many of the songs were "really fun and successful", however the production team intend to return to five songs per episode for "Glee" second season, in order to return focus to the characters.
When seeking to attain the rights to songs, early in the season Murphy was often requested to send out advanced scripts, but refused, not wanting to set a precedent for record labels having creative involvement in the show.
Singer Rihanna offered her single "Take a Bow" for use at a reduced licensing rate.
Madonna granted the show rights to her entire catalogue, and the tribute episode "The Power of Madonna" features Madonna performances exclusively.
In total, five soundtracks were released to accompany the first season.
Three albums released over the course of the season (', ', and ') compiled various songs throughout the series, while two EPs (' and "") were released on the same day as the respective episodes aired.
"Journey to Regionals" did not release any official singles, while the remaining four albums were fully released as singles.
Following the completion of the season, the "Glee" cast performed a 13-date concert tour in North America, "Glee Live!
In Concert!"
By its conclusion, tickets for all 13 performances had sold out, grossing $5,031,438. 
The first season of "Glee" consists of twenty-two episodes.
The pilot episode was originally broadcast on May 19, 2009.
The series returned on September 9, 2009, airing an additional twelve episodes on Wednesdays in the 9:00 pm timeslot until December 9, 2009, for a total of thirteen episodes.
On September 21, 2009, nine more episodes were ordered for the first season by Fox, and the first of these episodes was broadcast on April 13, 2010.
These episodes aired on Tuesday evenings at 9:00 pm.
On January 11, 2010, it was announced that Fox had commissioned a second season of the show.
The second season began production in June 2010.
Season two began on September 21, 2010, airing in the 8:00 pm time slot on Tuesdays, and consists of twenty-two episodes.
The show was chosen by Fox to fill the coveted timeslot that followed the network's coverage of Super Bowl XLV in 2011, and the network originally planned to move the show to the 9:00 pm time slot on Wednesdays following the post–Super Bowl broadcast.
However, Fox later revised its schedule, leaving "Glee" on Tuesdays in order to concentrate on building up its weaker Wednesday and Thursday line-ups.
A third season was ordered by Fox on May 23, 2010, before the end of the first season.
The early renewal of the show allowed the production team to cut costs and to plan ahead when writing scripts.
The third season broadcasts remained in the show's Tuesday 8:00 pm time slot, and began airing on September 20, 2011.
The show's fourth season changed both date and time of broadcast: it moved to Thursdays in the 9:00 pm time slot, and aired after that evening's 8:00 pm music competition "results" shows—"The X Factor" in the fall and "American Idol" in midseason.
The show was renewed for both a fifth and sixth season at the same time, on April 19, 2013.
"Glee" has been syndicated for broadcast in many countries worldwide, including Australia, where cast members visited to promote the show prior to its September 2009 debut on Network Ten.
Midway through season four, "Glee" was moved to Network Ten's digital channel Eleven due to poor ratings.
It also airs in Canada on City, formerly Global, New Zealand, and Fiji.
It is broadcast in South Africa, where Fox beams the episodes directly to the M-Net broadcast center in Johannesburg rather than delivering the tapes.
In addition, it airs in the United Kingdom, where E4 broadcast the first two seasons, showing episodes months after they were first aired in the US.
Sky1 broadcast the series starting with the third season, airing episodes two days after their US broadcast.
Asian countries that broadcast "Glee" include Bangladesh, the Philippines, India, Malaysia, and Singapore.