I Know What You Did Last Summer (song)

{{Infobox song

| name = I Know What You Did Last Summer

| cover = Shawn Mendes & Camila Cabello - I Know What You Did Last Summer.png

| alt =

| border = yes

| type = single

| artist = Shawn Mendes and Camila Cabello

| album = Handwritten (Revisited)

| released = {{Start date|2015|11|18}}

| recorded = 2015

| studio =

| venue =

| genre = Pop

| length = 3:43

| label = Island

| writer = {{hlist|Shawn Mendes|Camila Cabello|Ido Zmishlany|Noel Zancanella|Bill Withers}}

| producer = {{hlist|Ido Zmishlany|Noel Zancanella}}

| chronology = Shawn Mendes

| prev_title = Stitches

| prev_year = 2015

| next_title = Treat You Better

| next_year = 2016

| misc = {{Extra chronology

| artist = Camila Cabello

| type = single

| prev_title =

| prev_year =

| title = I Know What You Did Last Summer

| year = 2015

| next_title = Bad Things

| next_year = 2016

}}

{{External music video|{{YouTube|ngORmvyvAaI|"I Know What You Did Last Summer"}}}}

}}

"I Know What You Did Last Summer" is a song by Canadian singer Shawn Mendes and American singer and Fifth Harmony member Camila Cabello. The song serves as Cabello's debut single as a solo artist and was released as the lead single from the reissue of Mendes' debut studio album, Handwritten (Revisited) (2015), via Island Records on November 18, 2015. It reached the top 20 on the US Billboard Hot 100 and on the Canadian Hot 100. Mendes and Cabello promoted the song with several televised performances, including on The Tonight Show Starring Jimmy Fallon and at the 2016 People's Choice Awards. Mendes and Cabello later collaborated on "Señorita" in June 2019.

Background and composition

"I Know What You Did Last Summer" was written backstage spontaneously on one of Taylor Swift's The 1989 World Tour stops, in which Mendes was an opening act and Cabello was the surprise guest as part of the group Fifth Harmony. "We were just backstage. There were like 100 people in my dressing room at the time, and it was madness back there, but I had this guitar and I was just jamming out, and we basically wrote a pre-chorus and a chorus in like 30 minutes," Mendes said in a video released about the making of this song. "And we planned to go into the studio, and it was like an 11-hour studio session where we finished writing the song." After a live performance on Live with Kelly and Michael, Cabello said, "We were just kind of jamming out. We weren’t really just writing a song. We kind of started spitting out melodies and put lyrics to it; I don't think we knew we had a song."{{cite web|url=http://www.mtv.com/news/2508840/exclusive-sneak-peek-shawn-mendes-camila-cabello-ikwydls-video-gifs/|archive-url=https://web.archive.org/web/20151117201852/http://www.mtv.com/news/2508840/exclusive-sneak-peek-shawn-mendes-camila-cabello-ikwydls-video-gifs/|url-status=dead|archive-date=November 17, 2015|title=Exclusive: Get A Sneak Peek At Shawn Mendes And Camila Cabello's New Video|last=Garibaldi|first=Christina|date=November 16, 2015|publisher=MTV|access-date=December 4, 2015}}

The artists co-wrote "I Know What You Did Last Summer" with its producers Ido Zmishlany and Noel Zancanella, with Bill Withers receiving songwriting credits for the sampling of his 1971 single "Ain't No Sunshine" and Ryan Tedder also receiving songwriting credits. Cabello described "I Know What You Did Last Summer" as a "conversation between two people in a relationship where it's dying, but nobody wants to admit that it's dying." The song is sung in A minor and set in common time with a tempo of 114 beats per minute.{{cite web|url=http://www.musicnotes.com/sheetmusic/mtd.asp?ppn=MN0157812|title=Shawn Mendes "I Know What You Did Last Summer" Sheet Music - Download|work=Musicnotes.com|date=December 2, 2015 |access-date=December 4, 2015}}

Commercial performance

"I Know What You Did Last Summer" debuted at number ninety-seven on Billboard Hot 100 for the chart dated December 5, 2015, and jumped to number fifty-five on the following week. On the week ending January 9, 2016, the song jumped from number forty-six to number thirty-three. The song has since peaked at number twenty for the chart dated January 30, 2016, becoming Mendes' second top 20 single, after "Stitches", which peaked at number four on October 31, 2015.

Music video

A music video for the song was released on November 20, 2015, and was directed by Ryan Pallotta. In the video, Mendes and Cabello, ages 17 and 18 respectively at the time of the making of the song and filming of the video, are seen walking through a dark and desolated landscape. They keep trying to walk towards each other but are not moving. They are seen weathering a sandstorm, followed by a snowstorm and a rainstorm which culminates in a standoff of sorts.{{cite web|url=http://www.mtv.com/news/2545851/shawn-mendes-camila-cabello-ikwydls-video/|archive-url=https://web.archive.org/web/20151121170208/http://www.mtv.com/news/2545851/shawn-mendes-camila-cabello-ikwydls-video/|url-status=dead|archive-date=November 21, 2015|publisher=MTV|title=Shawn Mendes And Camila Cabello Put Their Stormy Relationship To The Test In 'IKWYDLS' Vid|date=November 20, 2015|last=Roth|first=Madeline|access-date=December 7, 2015}} The music video has over 412 million views and 4.1 million likes as of January 2024.

Live performances

Mendes and Cabello's first televised performance of "I Know What You Did Last Summer" was on Live with Kelly and Michael on November 20, 2015. They also performed the song on The Late Late Show with James Corden on November 23, 2015,{{cite magazine|url=http://www.billboard.com/articles/columns/pop-shop/6770496/shawn-mendes-camila-cabello-i-know-what-you-did-last-summer-james-corden|title=Shawn Mendes and Camila Cabello Perform 'I Know What You Did Last Summer' for 'Late Late Show'|magazine=Billboard|author=Billboard Staff|date=November 24, 2015|access-date=December 4, 2015}} and at Pitbull's New Year's Revolution on December 31, 2015, in Miami, Florida.{{cite web | url=http://www.bustle.com/articles/133016-shawn-mendes-camila-cabello-perform-on-pitbulls-new-years-revolution-its-super-sexy | title=Shawn Mendes & Camila Cabello Perform On 'Pitbull's New Year's Revolution' & It's Super Sexy | work=Bustle |first=Mallory |last=Carra | date=January 1, 2016 | access-date=January 4, 2016}} Mendes and Cabello performed the track again on The Tonight Show Starring Jimmy Fallon on January 4, 2016.{{cite web | url=http://headlineplanet.com/home/2016/01/04/first-look-shawn-mendes-camila-cabello-perform-on-jimmy-fallons-tonight-show/ | title=Shawn Mendes and Camila Cabello perform on "Tonight Show" | first=Brian | last=Cantor | work=Headline Planet | date=January 4, 2016 | access-date=January 4, 2016}}

Preceded by a performance of "Stitches", Mendes and Cabello sang "I Know What You Did Last Summer" at the 2016 People's Choice Awards.{{cite magazine | url=http://www.billboard.com/articles/news/6835334/shawn-mendes-camila-cabello-i-know-what-you-did-last-summer-2016-peoples-choice-awards | first=Jessie | last=Katz | title=Shawn Mendes and Camila Cabello Perform 'I Know What You Did Last Summer' at the 2016 People's Choice Awards | publisher=Prometheus Global Media | magazine=Billboard | date=January 6, 2016 | access-date=January 6, 2016}} They also performed together on The Ellen DeGeneres Show on February 15, 2016.{{cite web | url=http://www.capitalfm.com/artists/shawn-mendes/news/camila-cabello-ellen-degeneres/#sI9lB0FrZ0L1vg7p.97 | author=Capital FM Staff | title=Shawn Mendes & Camila Cabello Perform Together On Ellen And The Chemistry Is So Real!| publisher=Capital FM | date=February 17, 2016 | access-date=February 18, 2016}}

Mendes and Cabello performed the track again at the Radio City Music Hall on March 5, 2016, in New York.{{cite web |url=https://www.teenvogue.com/story/shawn-mendes-new-music-ruin-three-empty-words-like-this/amp |title=Hear the 3 New Songs Shawn Mendes Debuted in New York City This Weekend |website=teenvogue.com |date=March 7, 2016}}

Mendes and Cabello also performed the track while on the 2015 iHeartRadio Jingle Ball tour in December, on the following dates: 1, 4, 11, 16, 18 and 19.

Mendes added the single to his setlist on his tour, Shawn Mendes: The Tour, as a medley with "Señorita"—which Cabello also features in—and "Mutual". The single was also added to his setlist on his first solo concert tour, Shawn Mendes World Tour.

Track listings

Digital download{{Cite web|url=https://open.spotify.com/album/0jqa3qh7Qf4oUVblT4svqA |title=I Know What You Did Last Summer - Single by Shawn Mendes, Camila Cabello {{!}} Spotify|via=Spotify|date=November 18, 2015 }}

"I Know What You Did Last Summer" – 3:43

Digital download – Radio Edit{{Cite web|url=https://listen.tidal.com/album/189448016/credits|title=I Know What You Did Last Summer (Radio Edit) by Shawn Mendes, Camila Cabello on TIDAL|via=Tidal|date=November 18, 2015}}

"I Know What You Did Last Summer" (Radio Edit) – 3:11

Accolades

class="wikitable sortable plainrowheaders"
class="unsortable"\| Year ! scope="col"\| Organization ! scope="col"\| Award ! scope="col"\| Result ! class="unsortable"\| {{abbr\|Ref.\|Reference}}
rowspan="5"\| 2016 \| rowspan="3"\| iHeartRadio Much Music Video Awards \| Fan Fave Video \| {{Won}} \| rowspan="3"\| {{center\|{{Cite news\|url=https://www.forbes.com/sites/hughmcintyre/2016/06/20/drake-wins-big-at-the-2016-muchmusic-video-awards/#6880e30b470d\|title=Drake Wins Big At The 2016 MuchMusic Video Awards\|last=McIntyre\|first=Hugh\|work=Forbes\|access-date=March 14, 2017}} {{Cite news\|url=http://mmva.muchmusic.com/nominees/#video-of-the-year \|title=2016 MMVA Winners \|access-date=March 14, 2017 \|language=en-US \|url-status=dead \|archive-url=https://web.archive.org/web/20110524054219/http://mmva.muchmusic.com/nominees/ \|archive-date=May 24, 2011 }}}}
Best Pop Video \| {{Won}}
Video of the Year \| {{Nominated}}
Premios Juventud \| Favorite Hit \| {{Nominated}} \| {{center\|{{Cite web\|url=http://www.univision.com/especiales/premios-juventud/premios-juventud-2016-lista-completa-de-ganadores\|title=Premios Juventud 2016: Lista completa de ganadores\|website=Univision\|access-date=March 14, 2017}}}}
Teen Choice Awards \| Choice Music: Breakup Song \| {{Nominated}} \| {{center\|{{cite web\|url=https://www.hollywoodreporter.com/lists/teen-choice-awards-2016-winners-916007/item/tca-comedy-915745\|title=Teen Choice Awards: Winners List\|work=The Hollywood Reporter\|access-date=June 13, 2018\|date=July 31, 2016}}}}

class="wikitable sortable plainrowheaders"

class="unsortable"| Year

! scope="col"| Organization

! scope="col"| Award

! scope="col"| Result

! class="unsortable"| {{abbr|Ref.|Reference}}

rowspan="5"| 2016

| rowspan="3"| iHeartRadio Much Music Video Awards

| Fan Fave Video

| {{Won}}

| rowspan="3"| {{center|{{Cite news|url=https://www.forbes.com/sites/hughmcintyre/2016/06/20/drake-wins-big-at-the-2016-muchmusic-video-awards/#6880e30b470d|title=Drake Wins Big At The 2016 MuchMusic Video Awards|last=McIntyre|first=Hugh|work=Forbes|access-date=March 14, 2017}}
{{Cite news|url=http://mmva.muchmusic.com/nominees/#video-of-the-year |title=2016 MMVA Winners |access-date=March 14, 2017 |language=en-US |url-status=dead |archive-url=https://web.archive.org/web/20110524054219/http://mmva.muchmusic.com/nominees/ |archive-date=May 24, 2011 }}}}

Best Pop Video

| {{Won}}

Video of the Year

| {{Nominated}}

Premios Juventud

| Favorite Hit

| {{Nominated}}

| {{center|{{Cite web|url=http://www.univision.com/especiales/premios-juventud/premios-juventud-2016-lista-completa-de-ganadores|title=Premios Juventud 2016: Lista completa de ganadores|website=Univision|access-date=March 14, 2017}}}}

Teen Choice Awards

| Choice Music: Breakup Song

| {{Nominated}}

| {{center|{{cite web|url=https://www.hollywoodreporter.com/lists/teen-choice-awards-2016-winners-916007/item/tca-comedy-915745|title=Teen Choice Awards: Winners List|work=The Hollywood Reporter|access-date=June 13, 2018|date=July 31, 2016}}}}

Charts

= Weekly charts =

Chart (2015–2016) ! Peak position
class="wikitable sortable plainrowheaders" style="text-align:center;"
{{single chart\|Australia\|33\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=February 27, 2016}}
{{single chart\|Flanders\|21\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=April 15, 2016}}
{{single chart\|Wallonia Tip\|22\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=March 6, 2016}}
{{single chart\|Canada\|19\|artist=Shawn Mendes\|rowheader=true\|access-date=January 20, 2016}}
{{single chart\|Billboardcanadachrtop40\|21\|artist=Shawn Mendes\|rowheader=true\|access-date=May 16, 2018}}
{{single chart\|Billboardcanadahotac\|24\|artist=Shawn Mendes\|rowheader=true\|access-date=May 16, 2018}}
{{single chart\|Czech Republic\|27\|year=2016\|week=21\|rowheader=true}}
{{single chart\|Czechdigital\|14\|year=2016\|week=1\|rowheader=true}}
{{single chart\|Denmark\|21\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=January 25, 2016}}
{{single chart\|France\|192\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=January 25, 2016}}
{{single chart\|Germany\|90\|songid=1498234\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=April 15, 2016}}
scope="row"\| Greece Digital Songs (Billboard){{cite magazine \| url = http://www.billboard.com/biz/charts/2015-12-05/greece\| magazine = Billboard\| title = Greece Digital Songs \| access-date=January 29, 2016}} {{subscription required}} \| 9
{{single chart\|Hungaryradio\|7\|year=2016\|week=9\|rowheader=true\|access-date=March 10, 2016}}
{{single chart\|Hungarysingle\|26\|year=2016\|week=9\|rowheader=true\|access-date=March 10, 2016}}
{{single chart\|Ireland\|42\|year=2016\|week=12\|rowheader=true\|access-date=March 25, 2016}}
scope="row"\| Italy (FIMI){{cite web\|url=http://www.fimi.it/classifiche#/category:digital/id:2192/page:1\|title=Top Digital - Classifica settimanale WK 5 (dal 2016-01-29 al 2016-02-04)\|publisher=Federazione Industria Musicale Italiana\|access-date=February 6, 2016}} \| 53
{{single chart\|Dutch40\|12\|artist=Shawn Mendes\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=January 16, 2016}}
{{single chart\|Dutch100\|17\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=January 30, 2016}}
scope="row"\| New Zealand Heatseekers (Recorded Music NZ){{cite web\|url=https://aotearoamusiccharts.co.nz/archive/singles/2016-02-19\|title=NZ Heatseekers Singles Chart\|publisher=Recorded Music NZ\|date=February 22, 2016\|access-date=February 19, 2016}} \| 1
{{single chart\|Norway\|18\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=January 23, 2016}}
{{single chart\|Poland\|27\|year=2016\|chartid=1993\|rowheader=true\|access-date=June 6, 2016}}
{{single chart\|Portugal\|12\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=23 October 2017}}
{{single chart\|Slovakia\|67\|year=2016\|week=7\|rowheader=true}}
{{single chart\|Slovakdigital\|19\|year=2016\|week=1\|rowheader=true}}
{{single chart\|Sweden\|24\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=February 6, 2016}}
{{single chart\|Switzerland\|51\|artist=Shawn Mendes & Camila Cabello\|song=I Know What You Did Last Summer\|rowheader=true\|access-date=February 29, 2016}}
{{single chart\|UK\|42\|date=20160512\|rowheader=true\|access-date=May 6, 2016}}
{{single chart\|Billboardhot100\|20\|artist=Shawn Mendes\|rowheader=true\|access-date=January 19, 2016}}
{{single chart\|Billboardadultpopsongs\|28\|artist=Shawn Mendes\|rowheader=true\|access-date=March 6, 2016}}
{{single chart\|Billboardpopsongs\|10\|artist=Shawn Mendes\|rowheader=true\|access-date=February 2, 2016}}
{{single chart\|Billboarddigitalsongs\|5\|artist=Shawn Mendes\|rowheader=true\|access-date=January 23, 2016}}

=Year-end charts=

class="wikitable sortable plainrowheaders" style="text-align:center;"

Chart (2016)

! Position

scope="row"| Canada (Canadian Hot 100){{cite magazine|url=http://www.billboard.com/charts/year-end/2016/canadian-hot-100|title=Canadian Hot 100 Year End 2016|magazine=Billboard|access-date=December 9, 2016}}

| 86

scope="row"| Hungary (Rádiós Top 40){{cite web|url=http://zene.slagerlistak.hu/archivum/eves-osszesitett-listak/radios/2016|title=Rádiós Top 100 - hallgatottsági adatok alapján - 2016|access-date=October 20, 2019|publisher=Mahasz}}

| 49

scope="row"| Netherlands (Dutch Top 40){{cite web|url=https://www.top40.nl/bijzondere-lijsten/top-100-jaaroverzichten/2016|title=Top 100-Jaaroverzicht van 2016|publisher=Dutch Top 40|access-date=October 20, 2019}}

| 64

scope="row"| Netherlands (Single Top 100){{cite web|url=http://dutchcharts.nl/jaaroverzichten.asp?year=2016&cat=s|title=Jaaroverzichten - Single 2016|publisher=Hung Medien|access-date=December 25, 2016}}

| 69

scope="row"| US Billboard Hot 100{{cite magazine|title=Hot 100 Songs - Year-End 2016|url=http://www.billboard.com/charts/year-end/2016/hot-100-songs|magazine=Billboard|access-date=December 8, 2016}}

| 86

Certifications

{{Certification Table Entry|region=Australia|award=Platinum|number=2|type=single|relyear=2015|title=I Know What You Did Last Summer|certyear=2023|access-date= December 12, 2023}}

{{Certification Table Entry|region=Brazil|artist=Shawn Mendes|title=I Know What You Did Last Summer|award=Diamond|type=single|relyear=2015|certyear=2024|access-date=July 17, 2024}}

{{Certification Table Entry|region=Canada|award=Platinum|number=3|type=single|artist=Shawn Mendes & Camila Cabello|relyear=2015|certyear=2020|title=I Know What You Did Last Summer|access-date=September 18, 2020}}

{{Certification Table Entry|region=Denmark|award=Platinum|type=single|artist=Shawn Mendes & Camila Cabello|certyear=2019|relyear=2015|title=I Know What You Did Last Summer|id=8783|access-date=December 19, 2019}}

{{Certification Table Entry|region=Italy|title=I Know What You Did Last Summer|artist=Shawn Mendes & Camila Cabello|type=single|award=Gold|certyear=2016|relyear=2016}}

{{Certification Table Entry|region=Mexico|award=Gold|type=single|certyear=2017|relyear=2015|title=I Know What You Did Last Summer|access-date=June 2, 2017}}

{{Certification Table Entry|region=New Zealand|type=single|award=Platinum|relyear=2015|certyear=2020|title=I Know What You Did Last Summer|source=radioscope|access-date=January 7, 2025|artist=Shawn Mendes And Camila Cabello}}

{{Certification Table Entry|region=Norway|artist=Shawn Mendes & Camila Cabello|title=I Know What You Did Last|award=Platinum|type=single|relyear=2015|certyear=2016|access-date=April 6, 2018}}

{{Certification Table Entry|region=Poland|artist=Shawn Mendes & Camila Cabello|title=I Know What You Did Last Summer|award=Platinum|type=single|relyear=2015|certyear=2021|certmonth=8|access-date=October 6, 2021}}

{{Certification Table Entry|region=Portugal|title=I Know What You Did Last Summer|artist=Shawn Mendes & Camila Cabello|award=Platinum|type=single|relyear=2015|certyear=2022|id=file_2022-05-13-15-04-29.pdf|access-date=May 23, 2022}}

{{Certification Table Entry|region=Sweden|relyear=2015|certyear=2016|certweek=11|position=62|title=I Know What You Did Last Summer|artist=Shawn Mendes & Camila Cabello|type=single|award=Platinum}}

{{Certification Table Entry|region=United Kingdom|relyear=2015|certyear=2024|title=I Know What You Did Last Summer|artist=Shawn Mendes & Camila Cabello|type=single|award=Platinum|id=13783-4198-1|access-date=January 6, 2024}}

{{Certification Table Entry|region=United States|relyear=2015|certyear=2022|title=I Know What You Did Last Summer|artist=Shawn Mendes & Camila Cabello|type=single|award=Platinum|number=3|access-date=June 12, 2022}}

{{Certification Table Bottom|noshipments=true|streaming=true|nosales=true}}

References

Category:2015 singles

Category:2015 songs

Category:Shawn Mendes songs

Category:Camila Cabello songs

Category:Songs about infidelity

Category:Songs written by Noel Zancanella

Category:Songs written by Camila Cabello

Category:Songs written by Bill Withers

Category:Songs written by Shawn Mendes

Category:Songs written by Ido Zmishlany

Category:Song recordings produced by Noel Zancanella

Category:Island Records singles

Category:Male–female vocal duets