Last Friday Night (T.G.I.F.)

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"Last Friday Night (T.G.I.F.)"
Single by Katy Perry
from the album Teenage Dream
ReleasedJune 6, 2011 (2011-06-06)
August 8, 2011 (2011-08-08) (remix)
FormatCD single, digital download
Recorded2010 at Conway Recording Studios & eightysevenfourteen studios, (Los Angeles, California);
Playback Recording Studios
(Santa Barbara, California)
GenreIndie rock, disco, Hi-NRG
Length3:50 (Album version)
3:58 (Remix feat. Missy Elliott)
Writer(s)Katy Perry, Lukasz Gottwald, Max Martin, Bonnie McKee

Dr. Luke, Max Martin

Alternative cover
Remix featuring Missy Elliott
Remix featuring Missy Elliott
Katy Perry singles chronology
"Last Friday Night (T.G.I.F.)"
"The One That Got Away"
Music video
"Last Friday Night (T.G.I.F.)" on YouTube
Teenage Dream track listing
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"Last Friday Night (T.G.I.F.)"
Single by Katy Perry
from the album Teenage Dream
ReleasedJune 6, 2011 (2011-06-06)
August 8, 2011 (2011-08-08) (remix)
FormatCD single, digital download
Recorded2010 at Conway Recording Studios & eightysevenfourteen studios, (Los Angeles, California);
Playback Recording Studios
(Santa Barbara, California)
GenreIndie rock, disco, Hi-NRG
Length3:50 (Album version)
3:58 (Remix feat. Missy Elliott)
Writer(s)Katy Perry, Lukasz Gottwald, Max Martin, Bonnie McKee

Dr. Luke, Max Martin

Alternative cover
Remix featuring Missy Elliott
Remix featuring Missy Elliott
Katy Perry singles chronology
"Last Friday Night (T.G.I.F.)"
"The One That Got Away"
Music video
"Last Friday Night (T.G.I.F.)" on YouTube
Teenage Dream track listing

"Last Friday Night (T.G.I.F.)" is a song by American recording artist Katy Perry. The song was produced by Lukasz Gottwald and Max Martin, who also co-wrote the song with Perry and Bonnie McKee at Playback Recording Studio for Perry's third studio album, Teenage Dream. Perry stated that she was inspired to write the track after a night of wild partying and streaking. It was released as the album's fifth single[1] on June 6, 2011 through Capitol Records with a remix featuring American hip-hop recording artist Missy Elliott released to U.S. radio stations and digital retailers on August 8, 2011, this version was included in Teenage Dream: The Complete Confection edition.[2] Musically, the song is a prominent Indie rock, disco, and Hi-NRG song with dance-pop influences, while the lyrics are about drunken fun and debauchery. Some of the risque lyrics in the song are often censored in radio versions of the song.

The song received mixed to positive reviews from music critics, with some of them highlighting its playful and catchy nature. However, critics were divided regarding the song's lyrical content; some referred it to as funny and sexy, while others dismissed it as lifeless. The song had chart success in North America, reaching number one on the U.S. Billboard Hot 100 and Canadian Hot 100. It also topped U.S. charts like Hot Digital Songs, Pop Songs, Radio Songs, and Hot Dance Club charts, like all of her previous singles.[3] It also reached number one in Slovakia and the Czech Republic and has attained top-ten positions in Austria, Ireland, Italy and Poland.

With "Last Friday Night (T.G.I.F.)", Perry set a record for a female solo artist, having amassed five number one singles on the Billboard Hot 100 off a single album.[4] This makes Perry the second artist in the 53 year history of the chart to amass five number one singles from a single album—the first was Michael Jackson.[4] The song became Perry's sixth number-one single on the Billboard Hot 100 chart, and her fifth consecutive number one single.[5] The song joins the set's first four singles, all of which reached No. 1: "California Gurls", featuring Snoop Dogg; "Teenage Dream', "Firework", and "E.T.", featuring Kanye West. After the song reached number 1 in the Pop Songs airplay chart, "Teenage Dream" became the only album in history to have 5 number 1's from the same album on that chart. Also, when the song reached number one in the Adult Pop Songs airplay chart, the album become the only album in history to have 4 number 1's from the same album on the chart. As of February 2012, the single has sold over 3,000,000 digital copies in the United States alone.[6] On January 5, 2012, according to Nielsen Broadcast Data Systems, "Last Friday Night (T.G.I.F)" was elected the tenth most played single on U.S. radio during 2011 with 450,000 plays.[7]

The song's accompanying music video was directed by Marc Klasfeld. The clip features Perry, as her 13-year-old alter-ego Kathy Beth Terry, at a house party filled with music and dancing. While at the party, Terry is made over by her friend and draws attention to herself as the life of the party. The video features appearances by notable music artists and actors, which includes Rebecca Black, Corey Feldman, Debbie Gibson, Kenny G, Hanson, and Kevin McHale and Darren Criss of Glee. According to the director, the inspiration behind the video was Sixteen Candles, works by American filmmaker John Hughes, and other 1980s high school films. The music video won Favorite Music Video award at the 38th People's Choice Awards.[8]

The title "T.G.I.F." is an acronym for Thank God It's Friday.


Background and artwork

Perry has revealed that she was inspired to write the track after running naked through a park with her friends. According to Music Rooms, Perry claims that after a wild night of partying and streaking, she wrote the song about her antics and what she remembered the next day. Perry revealed: “There’s nothing better than an impromptu dance party with my friends. My track 'Last Friday Night (T.G.I.F.)' is a song about debauchery because I had one of those nights in Santa Barbara. We went out to this place called Wildcat and got crazy,” Perry admitted: “We had a couple of beers and danced until we died, then brought the party back to the hotel room.” She added: “Most of that song is actual truth, apart from the ménage à trois… unfortunately! But, yes, streaking in the park, that’s what we did, so we had to write a song about it the next day!”[9] Bonnie McKee, the co-writer of the song stated "TGIF is pretty much a word for word description of our trip to Santa Barbara [with Perry], so I love that one. It’s really catchy and fun and makes me nostalgic."[10] The official artwork for "Last Friday Night (T.G.I.F.)" using scenes from the music video, shows Perry both before and after a makeover. She revealed the cover artwork for "Last Friday Night (T.G.I.F.) Remixes!" on her Facebook page. The photo features Perry in nerdy gear, including mouth guard and glasses, and was taken when she hosted the Teen Choice Awards in summer 2010. The image is surrounded by 1980s-style neon colors and swirly graphics.[11] A remixed version of "Last Friday Night (T.G.I.F.)", featuring Missy Elliott, was released on August 8, 2011 to radio and digital downloads.[2][12] The remixed version omits the first verse of the album version, which is replaced by a new Missy Elliott rap verse, and includes an edit to the bridge, without the saxophone from the album version.[citation needed]

Composition and critical reception

Perry performing the song on her California Dreams Tour

"Last Friday Night (T.G.I.F.)" is an indie rock, disco, and Hi-NRG song with influences of dance-pop, which runs for three minutes and 50 seconds.[13][14][15][16] It is set in common time and has a moderate tempo of 126 beats per minute. It is written in the key of F♯ major and Perry's vocals span one octave, from C♯4 to D♯5.[17] It follows the chord progression B–G♯m7–D♯m7-C♯.[17] The song has received positive reception from music critics. Allmusic picked it among the top tracks on the album, and said that Perry "salutes fellow attention-whore Kesha on 'Last Friday Night (T.G.I.F.)'".[18] Rolling Stone said that "Perry likes her songs chatty; in the kegger romp "Last Friday Night," she chirps, "Think I need a ginger ale/That was such an epic fail".[19] Slant Magazine said that “"Last Friday Night (T.G.I.F.)" is a lifeless roller-rink jam with a "T! G! I! F!" shout-along that will no doubt provide the soundtrack to any number of trashy sorority parties this semester".[20] Spin Magazine said that "Last Friday Night recounts an evening of nonstop naughtiness – think streaking, skinny-dipping, and ménage à trois-ing.”[21]

Now Magazine wrote, "The singer recently said that the catchy 'Last Friday Night (T.G.I.F.)' is her version of 'I Gotta Feeling'. With lyrics about photos ending up online after a debauched evening, it’s also reminiscent of Lady Gaga singing about drunkenly losing her keys and phone on "Just Dance." Derivative, sure, but the song strikes a perfect equilibrium between Perry’s sex appeal and goofy, self-effacing charm".[22] The A.V. Club said that "assuming that everything here is based on real life also means we have to accept that she’s had a ménage à trois on the indie-rock-meets-American Idol cut Last Friday Night (T.G.I.F.)".[13] The Washington Post said that "Over strummy guitars and zigzagging keyboards, Perry recounts an evening of debauchery with no repercussions, her innocent transgressions (streaking, skinny-dipping) mentioned in the same breath as more serious trouble (mysterious bruises, a blackout), but ... [when] it's time for Perry to reflect on her 3 am follies, she stiffly sings, "That was such an epic fail." It sounds like a clueless parent's attempt to speak teenager.".[23] Billboard included the song in their Five Potential Pop Hits for 2011 list.[24] Future Music Charts said that it sounds like a pop song as it should be without any auto-tune voice changes and hard dj beats, which is the song's strength and weakness at the same time".[25]

In a post on his blog taking the form of an open letter to Perry, comedian Rob Delaney takes her to task for glamorizing binge drinking, unsafe sex and, possibly, date rape in the song. He comments on it lyric-by-lyric, sometimes humorously (in response to the line "Yeah we maxed our credit cards", Delaney writes "Suze Orman would be so angry if I told her this.") but more often seriously. To the line "Don't know what to tell my boss", he says:

Why do you have to tell your boss anything? Were your exploits reported in the paper? Is your boss also your landlord? Wait—aren't you international pop superstar, Katy Perry? I would have thought you were your own boss. Uh oh, I think we're arriving at why this song is not just awful, but is in fact dangerous. You are playing a character in this song! A character based on the young female demographic you target your music at: young women who do have jobs and bosses and mothers and fathers and necks and vaginas which sure as hell will be damaged and violated if they subscribe to the ideas you foist on them with your songs and the confusing "goofy slut" persona you've created.[26]

Chart performance

"Last Friday Night (T.G.I.F.)" marks Perry the first and only female artist to have five #1 singles from one album in Billboard Hot 100 tied by Michael Jackson, with his last #1 single being "Dirty Diana", on July 2, 1988.[27] The song's first charting position was at number 67 on the Billboard Hot 100.[28] It also charted at number 49 on the Canadian Hot 100 chart that same week. Following its single release, the song re-entered the Billboard Hot 100 on June 18, 2011 at number 63 and at number 31 on the Billboard Pop Songs.[29] The following week, the song jumped 63-31 with the Hot 100's "Greatest Gainer" award.[30] In its fourth week on the chart, "Friday" leaped to number four, spurred by a number one ranking on Hot Digital Songs. This made Teenage Dream the first album to have five songs hit number one on the chart.[31] The song peaked at number three on the Billboard Hot 100 chart, on July 30. The following week, "Last Friday Night (T.G.I.F.)", reached a new position of number two, where it remained for three additional weeks, behind "Party Rock Anthem" by LMFAO feat. Lauren Bennett and GoonRock.[32]

The song finally reached the number-one position on the Billboard Hot 100 chart for the issue dated August 27, 2011, and spent two weeks there. The song became Perry's sixth number-one single on the Billboard Hot 100 chart, and her fifth consecutive number-one single. Perry became the first woman in the 53-year history of Billboard to take five singles from the same album to number one on the Billboard Hot 100, equaling the record established by Michael Jackson 23 years earlier.[33] The song has also peaked at number-one on the Canadian Hot 100, and has became her fourth number-one single from the album. As of December 2011, the single has sold 2,579,000 digital copies in the United States.[34] "Last Friday Night (T.G.I.F.)" peaked at number two on the Irish Singles Chart. On the New Zealand Singles Chart it peaked at number four, marking Perry's first top spot miss, though it still managed to receive platinum by the Recording Industry Association of New Zealand, making it her fifth platinum selling single from her album. The song debuted at number 40 in Australia, and later peaked at number five in the country and going platinum. In the UK, the song peaked at No. 9 n the UK Singles Chart. On September 17, 2011, marked Perry' 69th consecutive week in the Top 10 with single.[35][36] As of February 12, 2012, the single has sold more than 3 million digital copies in the USA alone.[37] Worldwide it has sold over 5 million copies.[citation needed]

Music video

Background and release

Kevin McHale (left) and Darren Criss (right) from the TV show Glee, among other celebrities, feature in the music video.

In an interview with MTV, director Marc Klasfeld said that the video's storyline was inspired by Sixteen Candles and other works of John Hughes, as well as "all those great '80s high school movies."[38] Including a long series of outtakes during the ending credits was influenced by a similar idea in The Cannonball Run.[38] The costume for Perry's character, Kathy Beth Terry, was inspired by the character Betty Suarez, played by America Ferrera in the series Ugly Betty. The music video for "Last Friday Night (T.G.I.F.)" was filmed around May 3–6, 2011 at the home of John Schneider. It was directed by Marc Klasfeld,[39] and co-directed by Danny Lockwood.[39] Perry tweeted, "I told someone about my new music video I just filmed & they responded with 'wow, that's gonna break the internet.' ... Should I knock on wood?"[11]

The teaser of the video was released on Perry's YouTube profile on June 4, 2011.[40] Prior to the video's premiere, Perry created Facebook and Twitter profiles for her alter-ego of a nerdy thirteen year old, Kathy Beth Terry, who first appeared in one of Perry's hosting skits during the 2010 Teen Choice Awards.[41] Starting from June 8, a series of short video clips was uploaded on the Facebook profile, YouTube and Perry's official web version premiered later on the same day on Funny or Die. On July 11, after crossing the half-million "likes" mark, Perry released an interview in character as Terry on DigitalSpy.[42] Perry, in character as Kathy Beth Terry made various references to Rebecca Black and other guests on the video on her Twitter and Facebook. She also gave interviews to the Digitalspy, Australian Cosmopolitan and BOP Tiger Beat.[43][44]

The video went on to win Favorite Music Video award at the 38th People's Choice Awards.[8]


Kathy Beth Terry (Perry) and Rebecca Black during a house party in the music video.

Kathy Beth Terry (Perry), a nerdy teenager with braces, headgear, and oversized glasses, has just awakened the morning after a house party, surrounded by passed-out partygoers. A male guest, Aaron Christopherson (Darren Criss) opens the door to her bedroom and congratulates her on having the "best party ever." Puzzled as to what happened, she goes online, only to find pictures of herself in various compromising positions, including one picture of her licking the stomach of the boy in bed next to her. The video then goes into a flashback of the events that occurred the night before. While doing a Sudoku puzzle, Kathy hears loud music from the house next door, and goes over to complain. She is greeted by Rebecca Black (who appears as an homage to Black's viral video "Friday"), who invites her in. A nerdy Everett McDonald (Glee star Kevin McHale) ogles Terry from afar and fantasizes about being with her.

Kathy, however, is more interested in Steve Johnson aka "The Jock" (model Richie Nuzzolese), an attractive football player, who turns her down because of her appearance. To cheer her up, Black gives Kathy a makeover, ripping off her headgear with pliers, waxing her upper lip, dressing her in tight-fitting neon clothes, and teasing her hair out. Steve becomes enamored with her, and everyone starts dancing. Kathy and Rebecca are also seen playing Just Dance 2 (a game that features Perry as DLC and they are playing the song "Hot Stuff"). Musician Kenny G, despite not having played the saxophone on the song's actual recording, plays the saxophone solo on the roof while Hanson act as the house band. The entire party ends up moving to Kathy's house, where she throws up after drinking too much. Everett punches Steve for trying to fondle Kathy's butt (visualized by him as a medieval sword fight with Kathy as a damsel in distress).

At the end of the night, Kathy finally passes out next to Steve. The video shifts back to the next morning, where she looks at the photos with regret, but is also ecstatic to have a naked Steve passed out in her bed. The film ends with former teen idols Corey Feldman and Debbie Gibson as Kathy's parents, Kirk and Tiffany Terry, confronting Kathy about the state of the house; Feldman makes several references to The Lost Boys, in which he starred. The video end credits feature various deleted lines, bloopers, and extra scenes from the party, as well as Everett bringing Kathy breakfast in bed. After the credits end, it repeats the shot where Kathy gets tape ripped off her upper lip; her scream is heard this time.

Track listing

  1. "Last Friday Night (T.G.I.F.) (Album Version)" – 3:52
  2. "Last Friday Night (T.G.I.F.) (Instrumental)" – 3:48
  1. "Last Friday Night (T.G.I.F.) (Album Version)" – 3:52
  2. "Last Friday Night (T.G.I.F.) (Instrumental)" – 3:48
  3. "Call Out Hook" – 0:17
  1. "Last Friday Night (T.G.I.F.) (Sidney Samson Dub)" – 6:04
  2. "Last Friday Night (T.G.I.F.) (Sidney Samson Club Mix)" – 6:19
  3. "Last Friday Night (T.G.I.F.) (Sidney Samson Extended Edit)" – 4:12
  1. "Last Friday Night (T.G.I.F.)" (featuring Missy Elliott) – 3:58

Charts and certifications


Chart (2011–12)Peak
Australia (ARIA)[46]5
Austria (Ö3 Austria Top 75)[47]7
Belgium (Ultratop 50 Flanders)[48]22
Belgium (Ultratop 40 Wallonia)[49]25
Canada (Canadian Hot 100)[50]1
Croatia (Airplay Radio Chart)[51]2
Czech Republic (IFPI)[52]1
Denmark (Tracklisten)[53]34
France (SNEP)[54]22
Germany (Media Control AG)[55]15
Hungary (Rádiós Top 40)[56]5
Ireland (IRMA)[57]2
Italy (FIMI)[58]9
Lebanon (Lebanese Top 20)[59]3
Netherlands (Dutch Top 40)[60]7
New Zealand (RIANZ)[61]4
Poland (Airplay Chart)[62]5
Poland (Top 5 Video Airplay)[63]1
Romania (Romanian Top 100)[64]56
Scotland (Official Charts Company)[65]7
Slovakia (IFPI)[66]1
South Korea (GAON) (International Chart)[67]7
Spain (PROMUSICAE)[68]38
Spain (Airplay Chart)[69]6
Sweden (Sverigetopplistan)[70]33
Switzerland (Schweizer Hitparade)[71]20
UK Singles (Official Charts Company)[72]9
US Billboard Hot 100[50]1
US Adult Contemporary (Billboard)[50]17
US Adult Pop Songs (Billboard)[50][73]1
US Bubbling Under R&B/Hip-Hop Singles (Billboard)[74]10
US Hot Dance Club Songs (Billboard)[50]1
US Latin Songs (Billboard)[50]23
US Pop Songs (Billboard)[50]1
Venezuela (Record Report) Pop/Rock[75]1

Year-end charts

Chart (2011)Position
Australian Singles Chart[76]31
Belgian Singles Chart (Flanders)[77]86
Canadian Hot 100[78]12
French Airplay Chart[79]44
German Singles Chart[80]88
Hungarian Airplay Chart[81]45
Netherlands (Dutch Top 40)[82]34
New Zealand Singles Chart[83]24
UK Singles Chart[84]45
US Billboard Hot 100[85]14
US Pop Songs[86]4
US Adult Pop Songs[87]11
US Hot Dance Club Songs (Billboard)[88]6


List of record certifications per industry association
AustraliaARIA3× Platinum[89]
New ZealandRIANZPlatinum[92]
United KingdomBPISilver[93]
United StatesRIAA3× Platinum[94]

Live performances and cover versions

On September 5, 2010, Perry performed the song live for the first time along with "Teenage Dream", "Firework" and "Not Like The Movies" in the show's launch of the Teenage Dream in Berlin. Though the song has never been performed live as part of a televised performance, the song is featured on the set list of the Teenage Dream Tour and California Dreams Tour. The first televised performance was during her presentation at Rock In Rio, which was broadcast live by the Multishow. During this song, photos of fans are displayed on the screens.[95] Her sister Angela Hudson portrayed the character on stage during some of the California Dreams Tour concerts in the USA.

Woe, Is Me version

"Last Friday Night (T.G.I.F.)"
Single by Woe, Is Me
from the album Punk Goes Pop 4
ReleasedNovember 8, 2011 (2011-11-08)
GenreMetalcore, electronicore
Woe, Is Me singles chronology
"Last Friday Night (T.G.I.F.)"

Atlanta-based metalcore group, Woe, Is Me covered the song for the Punk Goes Pop 4 compilation. It is the second song by the band released, so far, with Hance Alligood handling the clean vocal positions. The cover began streaming by November 7, 2011 and its single was released the next day.[96][97]

Other covers


Credits adapted from Teenage Dream album liner notes.[98]

Woe, Is Me version personnel

Radio add dates and release history

United StatesJune 6, 2011[99]Mainstream/RhythmicCapitol Records
June 27, 2011[100]Hot/Modern/AC
WorldwideAugust 8, 2011[12]Digital download — Missy Elliott remix

See also


  1. ^ Copsey, Robert (April 25, 2011). "Playlist: 10 tracks you need to hear". Digital Spy. Retrieved June 17, 2011. 
  2. ^ a b Katy Perry Could Tie No. 1s Record With Missy Elliott 'Friday' Remix
  3. ^ Eminem & Royce da 5'9" Debut at No. 1 on Billboard 200 with Bad Meets Evil EP
  4. ^ a b Gary, Trust. "Katy Perry Makes Hot 100 History: Ties Michael Jackson's Record" August 16, 2011,
  5. ^ Katy Perry Makes Hot 100 History: Ties Michael Jackson's Record
  6. ^ Last Friday Night Passes the 3 Million Mark
  7. ^ Katy Perry most played artist of 2011
  8. ^ a b "And The Nominees Are...". Music. Retrieved January 12, 2012. 
  9. ^ "Katy Perry Says Streaking Inspired Album Track". MTV. March 10, 2011. Retrieved June 17, 2011. 
  10. ^
  11. ^ a b
  12. ^ a b c "Last Friday Night (T.G.I.F.) [feat. Missy Elliott – Single by Katy Perry – Download Last Friday Night (T.G.I.F.) [feat. Missy Elliott] – Single on iTunes"]. iTunes Store. Retrieved August 8, 2011. 
  13. ^ a b Hawthorne, Marc (August 31, 2010). "Katy Perry: Teenage Dream | Music | Music Review". The A.V. Club.,44690/. Retrieved April 9, 2011. 
  14. ^ Avron, Haley. "Katy Perry - Teenage Dream: The Complete Confection Album Review". Contact Music. Channel 4. 
  15. ^ "Katy Perry – Last Friday Night Sheet Music (Digital Download)". 
  16. ^ Hickey, Dara (July 20, 2011). "Single Review: Katy Perry - 'Last Friday Night (T.G.I.F.)'". Unreality TV. Unreality Shout. Retrieved August 18, 2012. 
  17. ^ a b "Digital sheet music – Katy Perry – Last Friday Night (T.G.I.F.)". Alfred Publishing. 
  18. ^ Thomas, Stephen (August 24, 2010). "Teenage Dream – Katy Perry". AllMusic. Retrieved April 9, 2011. 
  19. ^ By Rob Sheffield (August 23, 2010). "Teenage Dream by Katy Perry | Rolling Stone Music | Music Reviews". Rolling Stone. Retrieved April 9, 2011. 
  20. ^ "Katy Perry: Teenage Dream | Music Review". Slant Magazine. Retrieved April 9, 2011. 
  21. ^ Wood, Mikael. "Katy Perry, 'Teenage Dream' (Capitol)". Retrieved April 9, 2011. 
  22. ^ Richards, Jason. "NOW Magazine // Music // Katy Perry". Retrieved April 9, 2011. 
  23. ^ Richards, Chris (August 24, 2010). "Album review of 'Teenage Dream' by Katy Perry". The Washington Post. Retrieved April 9, 2011. 
  24. ^ Up for Discussion Jump to Forums. "Ask Billboard: Readers' 2010 Top Picks, Continued – Chart Beat". Billboard. Retrieved April 9, 2011. 
  25. ^ Hawthorne, Tom (April 20, 2011). "Katy Perry: Teenage Dream FMC Review". Future Music Charts. Retrieved August 20, 2011. 
  26. ^ Delaney, Rob (October 2011). "Dear Katy Perry". Retrieved July 9, 2012. 
  27. ^ [1]
  28. ^ Pietroluongo, Silvio (September 2, 2010).. "Eminem and Rihanna Still No. 1 on Hot 100, Cee Lo's 'F**k You' Debuts". Billboard. Retrieved April 9, 2011. 
  29. ^ Trust, Gary (June 8, 2011).. "Adele's Still 'Deep' Atop Hot 100, Coldplay Makes a Splash". Billboard. Retrieved June 8, 2011. 
  30. ^ Trust, Gary (June 15, 2011).. "Adele 'Rolling' Along Atop Hot 100, Jason Aldean & Nicki Minaj Reach Top 10". Billboard. Retrieved June 15, 2011. 
  31. ^ Trust, Gary (June 22, 2011).. "Katy Perry's 'Friday' Flies Up Hot 100, Adele Still No. 1". Billboard. Retrieved June 22, 2011. 
  32. ^ Trust, Gary (August 10, 2011). (August 10, 2011). ""LMFAO Keeps Katy Perry At Bay Atop Hot 100".". Billboard (Nielsen Business Media, Inc).. Retrieved August 10, 2011. 
  33. ^ Trust, Gary (August 17, 2011). (August 17, 2011.). ""Katy Perry Makes Hot 100 History: Ties Michael Jackson's Record".". Billboard (Nielsen Business Media, Inc).. Retrieved August 17, 2011. 
  34. ^ Grein, Paul (December 14, 2011). "Chart Watch Extra: The Year’s Top 30 Hits | Chart Watch (NEW) – Yahoo! Music". Retrieved January 22, 2012. 
  35. ^ Trust, Gary (September 7, 2011). "Adele's 'Someone Like You' Soars To No. 1 On Hot 100". Billboard (Nielsen Business Media, Inc). Retrieved September 7, 2011. 
  36. ^ Perry Brazilian web site (in Portuguese)
  37. ^ Week Ending Feb 12, 2012. Songs: Luv For Madonna
  38. ^ a b Vena, Jocelyn (June 20, 2011). "Katy Perry's 'Last Friday Night' Video: Frame By Frame". Retrieved June 22, 2011. 
  39. ^ a b
  40. ^ [2]
  41. ^ Mapes, Jillian (June 13, 2011). "Katy Perry Parties With Rebecca Black, 'Glee' Cast in 'Last Friday Night' Video". Billboard. Retrieved June 22, 2011. 
  42. ^ Published Monday, Jul 11, 2011, 12:02 BST (July 11, 2011). "Kathy Beth Terry interview: "Katy Perry has been great to me" – Music Interview". Digital Spy. Retrieved January 22, 2012. 
  43. ^ "Cosmo chats: Kathy Beth Terry". Cosmopolitan. July 18, 2011. Retrieved January 22, 2012. 
  44. ^ 5, 2011
  45. ^ a b Steffen Hung. "Katy Perry – Last Friday Night (T.G.I.F.)". Retrieved January 22, 2012. 
  46. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)". ARIA Top 50 Singles. Hung Medien.
  47. ^ "Katy Perry – Last Friday Night (T.G.I.F.) –" (in German). Ö3 Austria Top 40. Hung Medien.
  48. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)" (in Dutch). Ultratop 50. Ultratop & Hung Medien /
  49. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)" (in French). Ultratop 40. Ultratop & Hung Medien /
  50. ^ a b c d e f g "Katy Perry - Last Friday Night (T.G.I.F.)". Retrieved August 2, 2011. 
  51. ^ {url=
  52. ^ "ČNS IFPI" (in Czech). Hitparáda – Radio Top100 Oficiální. IFPI Czech Republic. Note: insert 201136 into search.
  53. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)". Tracklisten. Hung Medien.
  54. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)" (in French). Les classement single. Hung Medien.
  55. ^ "Die ganze Musik im Internet: Charts, News, Neuerscheinungen, Tickets, Genres, Genresuche, Genrelexikon, Künstler-Suche, Musik-Suche, Track-Suche, Ticket-Suche –" (in German). Media Control Charts. PhonoNet GmbH. Retrieved April 30, 2011.
  56. ^ "Archívum – Slágerlisták – MAHASZ – Magyar Hanglemezkiadók Szövetsége" (in Hungarian). Rádiós Top 40 játszási lista. Magyar Hanglemezkiadók Szövetsége.
  57. ^ "Chart Track". Irish Singles Chart. Irish Recorded Music Association.
  58. ^ Italian Singles Chart
  59. ^
  60. ^ "Nederlandse Top 40 – Katy Perry search results" (in Dutch) Dutch Top 40. Stichting Nederlandse Top 40.
  61. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)". Top 40 Singles. Hung Medien.
  62. ^ "Top 5 Airplay" (in Polish). Polish Music Charts. ZPAV. August 20, 2011. Retrieved November 6, 2011. 
  63. ^ "Top 5 video". Polish Video Chart. ZPAV. August 27, 2011. Retrieved November 26, 2011. 
  64. ^ Romanian Top 100: June 27 – July 3, 2011
  65. ^ "30, 2011/ Archive Chart". Scottish Singles Top 40. Official Charts Company.
  66. ^ "SNS IFPI" (in Slovak). Hitparáda – Radio Top100 Oficiálna. IFPI Czech Republic. Note: insert 201133 into search.
  67. ^ 가온차트와 함께하세요 ::. Retrieved on 2011-09-01.
  68. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)" Canciones Top 50. Hung Medien.
  69. ^ [3]] "Promusicae (Week: January 1, 2011)"].]]. Retrieved July 13, 2011. 
  70. ^ " – Katy Perry – Last Friday Night (T.G.I.F.)". Singles Top 60. Hung Medien.
  71. ^ "Katy Perry – Last Friday Night (T.G.I.F.) –". Swiss Singles Chart. Hung Medien.
  72. ^ "9, 2011/ Archive Chart" UK Singles Chart. Official Charts Company.
  73. ^ "Chart Highlights: Dance/Club Play, Country Songs & More". Billboard. Prometheus Global Media. August 29, 2011. Retrieved August 30, 2011. 
  74. ^ "Bubbling Under R&B/Hip-Hop Singles – Issue Date: 2011-09-10". Billboard. Prometheus Global Media. Retrieved August 1, 2012. 
  75. ^ "Pop Rock". Record Report. October 8, 2011. Archived from the original on October 7, 2011. 
  76. ^ "Adele’s "21" crowned ARIA’s highest selling album of 2011 LMFAO takes single honours with "Party Rock Anthem"". Retrieved January 1, 2012. 
  77. ^ "JAAROVERZICHTEN 2011" (in Dutch). Retrieved December 29, 2011. 
  78. ^ "Best of 2011: Canadian Hot 100". Billboard. Prometheus Global Media. 2011. Retrieved December 10, 2011. 
  79. ^ "Classement Radios – année 2011" (in French). SNEP. Retrieved February 12, 2012. 
  80. ^ ":: MTV | Single Jahrescharts 2011 | charts". December 31, 2011. Retrieved January 22, 2012. 
  81. ^ "MAHASZ Rádiós TOP 100 2011" (in hungarian). Mahasz. Retrieved February 23, 2012. 
  82. ^ "JAAROVERZICHTEN – SINGLE 2011". Retrieved December 29, 2011. 
  83. ^
  84. ^ "Year End Chart 2011". OfficialChartsCompany. Retrieved April 10, 2012. 
  85. ^ "Best of 2011: Hot 100 Songs". Billboard. Prometheus Global Media. 2011. Retrieved December 9, 2011. 
  86. ^ "Best of 2011: Pop Songs". Billboard. Prometheus Global Media. 2011. Retrieved December 10, 2011. 
  87. ^ "Best of 2011: Adult Pop Songs". Billboard. Prometheus Global Media. 2011. Retrieved December 11, 2011. 
  88. ^ "Best of 2011: Dance/Club Songs (41–50)". Billboard. Prometheus Global Media. Retrieved January 3, 2012. 
  89. ^ "ARIA Charts – Accreditations – 2011 Singles". Australian Recording Industry Association. April 30, 2011. Retrieved May 3, 2011. 
  90. ^ "Certificeringer |". IFPI Denmark. Retrieved July 31, 2012. 
  91. ^ "fimi certifications". FIMI. August 21, 2011. Retrieved December 22, 2011. 
  92. ^ "Latest Gold / Platinum Singles". RadioScope. Recording Industry Association of New Zealand. Retrieved April 12, 2011. 
  93. ^ "Certified Awards Search". British Phonographic Industry. Retrieved June 12, 2011. 
  94. ^ "Gold & Platinum Searchable Database: Katy Perry". Recording Industry Association of America. Retrieved September 10, 2011. 
  95. ^ "Katy Perry Debuts Tweet-to-Screen for California Dreams 2011 Tour – Music Industry Today". Retrieved November 11, 2011. 
  96. ^ Common, Tyler. "Woe, Is Me stream Katy Perry "Last Friday Night" cover". Alternative Press. Retrieved November 15, 2011. 
  97. ^ Hess, Mike. "Katy Perry News – Woe Is Me Cover's Katy Perry's 'TGIF' (LISTEN)". Celebuzz. Retrieved January 22, 2012. 
  98. ^ (CD booklet) Teenage Dream (CD booklet). Katy Perry. Capitol Records. 2010. p. 10. 50999 07410 2 9. 
  99. ^ "Radio Industry News, Music Industry Updates, Arbitron Ratings: 6/6 Mainstream". FMQB. Friday Morning Quarterback Album Report, Inc. and Mediaspan Online Services. Retrieved May 7, 2011. 
  100. ^