Question: How many episodes were in the 1st season of Glee?
About the article "Glee (TV series)", section "Merchandise".

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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.
"Glee: Season 2, Volume 1" contains the first ten episodes of the season.
It was released as a three-disc box set on Region 1 DVD in the US and Canada on January 25, 2011, on Region 4 DVD in Australia and New Zealand on March 23, 2011, and on Region 2 DVD in the UK and Ireland on April 4, 2011.
The special features include a DVD-exclusive song from "The Rocky Horror Glee Show".
The final twelve episodes of the season are collected on "Glee: Season 2, Volume 2", which was released in the US on September 13, 2011, and includes several special features such as "Building "Glee" Auditorium" with Cory Monteith and "Shooting "Glee" in New York City"; "Glee: The Complete Second Season" was released on the same day in DVD and Blu-ray, and contains all the special features from the second season's first and second DVD volumes.
The two DVDs and full-season Blu-ray were released in the UK on September 19, 2011, and in Australia on October 5, 2011.
Amazon.com began taking pre-orders for the complete season box set on Blu-ray and DVD in September 2010, the week the season premiered. 
Jenner was the sole winner of the second season of the reality television competition "The Glee Project" in 2012, which earned him a seven-episode arc on the fourth season of "Glee".
The prize was awarded by Ryan Murphy, who had the final decision on who was eliminated after each episode and who the eventual winner would be.
"Glee" casting director Robert Ulrich, who was one of the mentors and judges of the competition, cited Jenner's versatility and skill as an actor, and noted that with the character of Finn having graduated at the end of the show's third season, Murphy, "Glee" showrunner, said they needed a new "anchor in the choir room".
He quoted Murphy as having said many times during the competition—though it never appeared on screen in a "Glee Project" episode—"Robert, the most difficult person to cast for "Glee" is the jock.
Because to find a masculine, good-looking guy who can sing and act is so tough.
"Jenner continued appearing as a recurring guest star for the remainder of the fourth season beyond the seven episodes he had won.
Jenner as Ryder has been promoted to the main cast as of the beginning of "Glee" fifth season. 
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. 
"Glee – Pilot Episode: Director's Cut" was released on Region 1 DVD in the US on September 1, 2009, exclusively to Wal-Mart.
It was released on Region 4 DVD in Australia and New Zealand on November 25, 2009, and on Region 2 DVD in the UK and Ireland on January 25, 2010.
The DVD includes a preview of the episode "Showmance", plus a deconstruction of the series by creator Ryan Murphy.
"Glee – Volume 1: Road to Sectionals" contains the first thirteen episodes of the first season.
It was released as a four-disc box set on Region 1 DVD in the US and Canada on December 29, 2009.
It was released on Region 4 DVD in Australia and New Zealand on March 31, 2010, and on Region 2 DVD in the UK and Ireland on April 19, 2010, and in South Africa on August 14, 2010.
Special features include full length audition pieces from the pilot episode by Michele as Rachel and Riley as Mercedes, plus casting and choreography featurettes.
"Glee – Volume 2: Road to Regionals" contains the final nine episodes of the first season, and was released on Region 2 DVD in the UK and Ireland on September 13, 2010, Region 1 DVD in the US on September 14, 2010, on Region 4 DVD in Australia and New Zealand on September 22, 2010.
"Glee – The Complete Season 1" was released on Region 2 DVD on September 13, 2010, Region 1 DVD on September 14, 2010, and Region 4 DVD on September 22, 2010.
The seven-disc box set contains the full 22 episode first season, including extended episodes, sing-along karaoke, a behind-the-scenes look at "The Power of Madonna" episode, "Glee" makeovers, never-before-seen 'Sue's Corner' segments and a dance tutorial.
It was also released as a four-disc Blu-ray box set.
"Glee - Season 2, Volume 1" was released on Region 1 DVD on January 25, 2011.
The 3-disc set contains the first 10 episodes of season 2, including an exclusive "Rocky Horror Glee Show" song ("Planet Schmanet Janet") recorded just for the DVD, a "Glee" music jukebox, a "Getting Waxed with Jane Lynch" featurette, Brittany's most "profound" moments from season 1 and the first half of season 2, and a "Glee at Comic-Con 2010" featurette.
The final twelve episodes of the season are collected on "Glee: Season 2, Volume 2", which was released in the US on September 13, 2011, and includes several special features such as "Building "Glee" Auditorium" with Cory Monteith and "Shooting "Glee" in New York City".
"Glee – The Complete Season 2" was released on the same day in DVD and Blu-ray, and contains all the special features from the second season's first and second DVD volumes.
The two DVDs and full-season Blu-ray were released in the UK on September 19, 2011, and in Australia on October 5, 2011.
Amazon.com began taking pre-orders for the complete season box set on Blu-ray and DVD in September 2010, the week the season premiered.
"Glee – The Complete Season 3" was released on August 14, 2012 in DVD (with 6-set discs) and Blu-ray (with 4-set discs), and contains the special features; ""Glee" Music Jukebox", ""Glee" Under the Stars", "Deleted Scenes", "Santana's "Santa Baby" Music Video", "Young Sue's "Oklahoma!"
Music Video", ""Glee" Give a Note", "Welcome to the Class", "Making the Finale", "Sue Addresses Her Fans", "More of Sue's Quips" and "Ginger Supremacists" Extended Scene".
This was the first season to not have "Volume" releases.
"Glee Encore" was released on Region 1 DVD and Blu-ray on April 19, 2011.
The DVD features 34 performances from season 1 of the series.