Shellback (record producer)

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Shellback in 2015
Shellback in 2015
Background information
Birth nameKarl Johan Schuster
Born (1985-02-01) 1 February 1985 (age 35)
OriginKarlshamn, Sweden
  • Record producer
  • songwriter
  • multi-instrumentalist
Years active2003–present
Associated acts

Karl Johan Schuster (Swedish: [ˈjûːan ˈɧʏ̌sːtɛr]; born 1 February 1985), known professionally as Shellback, is a Swedish record producer, songwriter, and multi-instrumentalist. Shellback was listed as the No. 1 producer of 2012 on Billboard magazine's year end chart, and he also topped the list of their "Top 10 Songwriters Airplay Chart" the same year; he has won four Grammy Awards.

He regularly collaborates with songwriter Max Martin, and together they have produced, written, or co-written songs for P!nk, Taylor Swift, Adam Lambert, Britney Spears, Usher, Avril Lavigne, Ariana Grande, Adele, and Maroon 5. Shellback has also collaborated with fellow producer Benny Blanco and has produced songs by himself, including "Want U Back" by Cher Lloyd and "Animals" by Maroon 5.

Life and career[edit]

Karl Johan Schuster was born and raised in Karlshamn, Sweden. He started as a drummer in local indie rock bands in Karlshamn, as well as recording all instruments on the 2003 Meriah demo ...Turn Him Your Other Cheek (a strictly black metal recording), before joining the hardcore-metal scene as a vocalist in 2004 for Blinded Colony, with whom he recorded 2005's Promo Demo and 2006's Bedtime Prayers, drawing comparisons to fellow Swedish melodic death metal band In Flames, before leaving in 2007. In 2005 he also performed as a guest musician on the Faith album Sorg.

At the age of 16, Schuster met Max Martin through their mutual friend Julius. By that time, according to an interview in the Swedish music magazine Stim-magasinet, Schuster's taste in music was "too cool for school" and he had no interest in pop music whatsoever. Julius kept sending Schuster's indie rock-death metal demos to Martin, who became curious about what it would sound like if Schuster would make pop music. So in 2006 Martin invited Schuster to his studio in Stockholm to record a demo with him, and since 2007 Schuster has been signed to Martin's production company Maratone.[1]

Among the first songs Schuster co-wrote with Martin are Pink's 2008 single "So What" and Britney Spears' 2008 single "If U Seek Amy".[2] In 2012 Schuster won the STIM Platinum guitar prize.[3] In 2014, Schuster produced "Problem" alongside Martin and Ilya.[4] In 2015, Shellback collaborated with Swedish hardcore punk band Refused, as he is both a fan of the band's music and friends with the band's drummer David Sandstrom. Sandstrom sent him the versions of the songs "Elektra" and "366" that Refused had recorded with producer Nick Launay, and Shellback replied with his own arrangements of the two songs. Refused frontman Dennis Lyxzen explained in June 2015 that Shellback's versions were "far more Refused than our versions" and "were better" than the Launay-produced versions. The two songs appear on Refused's comeback album Freedom—"Elektra" was released as a single on 27 April 2015—which was released on the label Epitaph Records on 26 June 2015.[5]


With Meriah
  • ...Turn Him Your Other Cheek (Demo) (2003)
With Blinded Colony
As a guest musician

Production discography[edit]

Year Title Album Co-writer Producer or co-producer
2008 "If U Seek Amy" Britney SpearsCircus ☑Y ☑Y
"I'm Gone I'm Going" Lesley RoyUnbeautiful ☑Y ☑Y
"Boring" PinkFunhouse ☑Y ☑Y
"It's All Your Fault" ☑Y ☑Y
"So What" ☑Y ☑Y
2009 "Oxygen" Living ThingsHabeas Corpus ☑Y ☑Y
"Bigger" Backstreet BoysThis Is Us ☑Y ☑Y
"3" Britney SpearsThe Singles Collection ☑Y ☑Y
"Quitter" Carrie UnderwoodPlay On ☑Y ☑Y
"Friday I'll Be Over U" Allison IrahetaJust Like You ☑Y ☑Y
"Just Like You" ☑Y ☑Y
"Outta My Head" Leona LewisEcho ☑Y ☑Y
"Naked" ☑Y ☑Y
"Whataya Want from Me" Adam LambertFor Your Entertainment ☑Y ☑Y
"If I Had You" ☑Y ☑Y
2010 "Kiss n Tell" KeshaAnimal ☑Y ☑Y
"Hungover" ☑Y ☑Y
"Party at a Rich Dude's House" ☑Y ☑Y
"Dinosaur" ☑Y ☑Y
"DJ Got Us Fallin' in Love" UsherVersus ☑Y ☑Y
"Raise Your Glass" Pink – Greatest Hits... So Far!!! ☑Y ☑Y
"Fuckin' Perfect" ☑Y ☑Y
"Time Machine" RobynBody Talk ☑Y ☑Y
2011 "Can't Find Entrance" Those Dancing DaysDaydreams & Nightmares ☑Y ☑Y
"Loser like Me" Glee castGlee: The Music, Volume 5 ☑Y ☑Y
"Dancing Crazy" Miranda CosgroveHigh Maintenance ☑Y ☑Y
"I'll Survive You" BC Jean – Single ☑Y ☑Y
"Back 2 Life" E-Type – Single ☑Y ☑Y
"What the Hell" Avril LavigneGoodbye Lullaby ☑Y ☑Y
"Wish You Were Here" ☑Y ☑Y
"Smile" ☑Y ☑Y
"I Love You" ☑Y ☑Y
"I Wanna Go" Britney SpearsFemme Fatale ☑Y ☑Y
"Criminal" ☑Y ☑Y
"Up n' Down" ☑Y ☑Y
"Light Up the World" Glee cast – Glee: The Music, Volume 6 ☑Y ☑Y
"Moves like Jagger" Maroon 5Hands All Over ☑Y ☑Y
"Beggin' on Your Knees" Victorious cast – Victorious ☑Y ☑Y
"No More Secrets" Carolina LiarWild Blessed Freedom ☑Y ☑Y
"Me and You" ☑Y ☑Y
"Beautiful People" ☑Y ☑Y
"King of Broken Hearts" ☑Y ☑Y
"Salvation" ☑Y ☑Y
"All That Comes Out of My Mouth" ☑Y ☑Y
"Want U Back" Cher LloydSticks + Stones ☑Y ☑Y
"With Ur Love" ☑Y ☑Y
"Beautiful People" ☑Y ☑Y
"She Doesn't Mind" Sean PaulTomahawk Technique ☑Y ☑Y
2012 "Payphone" (feat. Wiz Khalifa) Maroon 5Overexposed ☑Y ☑Y
"One More Night" ☑Y ☑Y
"Doin' Dirt" ☑Y ☑Y
"Scream" UsherLooking for Myself ☑Y ☑Y
"We Are Never Ever Getting Back Together" Taylor SwiftRed ☑Y ☑Y
"I Knew You Were Trouble" ☑Y ☑Y
"22" ☑Y ☑Y
"Slut Like You" P!nkThe Truth About Love ☑Y ☑Y
"Your Body" Christina AguileraLotus ☑Y ☑Y
"Let There Be Love" ☑Y ☑Y
"Kiss You" One DirectionTake Me Home ☑Y ☑Y
"Heart Attack" ☑Y ☑Y
"Nobody Compares" ☑Y ☑Y
"All That Matters (The Beautiful Life)" KeshaWarrior ☑Y ☑Y
2013 "Release You" Megan & LizLook What You Started ☑Y ☑Y
"Easier To Lie" Cassadee PopeFrame by Frame ☑Y ☑Y
"On a Roll" Icona PopThis Is... Icona Pop ☑Y ☑Y
"That High" (feat. Kelly Rowland) PitbullMeltdown ☑Y
2014 "Air Balloon" Lily AllenSheezus ☑Y ☑Y
"I Wish" (feat. T.I.) Cher LloydSorry I'm Late ☑Y ☑Y
"Just Be Mine" ☑Y ☑Y
"Dirty Love" ☑Y ☑Y
"Blind Your Love" ☑Y ☑Y
"Killing It" ☑Y ☑Y
"I'm in Love" Ola Svensson – Carelessly Yours ☑Y ☑Y
"Tonight I'm Yours" ☑Y ☑Y
"Jackie Kennedy" ☑Y ☑Y
"Problem" (feat. Iggy Azalea) Ariana Grande - My Everything ☑Y ☑Y
"Animals" Maroon 5V ☑Y ☑Y
"In Your Pocket" ☑Y ☑Y
"Feelings" ☑Y ☑Y
"Shoot Love" ☑Y ☑Y
"Blank Space" Taylor Swift - 1989 ☑Y ☑Y
"Style" ☑Y ☑Y
"All You Had to Do Was Stay" ☑Y
"Shake It Off" ☑Y ☑Y
"Bad Blood" ☑Y ☑Y
"Wildest Dreams" ☑Y ☑Y
"How You Get the Girl" ☑Y ☑Y
"Wonderland" ☑Y ☑Y
"New Romantics" ☑Y ☑Y
"Talking Body" Tove Lo - Queen of the Clouds ☑Y ☑Y
2015 "Bad Blood" (feat. Kendrick Lamar) Taylor Swift1989 ☑Y ☑Y
"Elektra" Refused - Freedom ☑Y ☑Y
"366" ☑Y ☑Y
"This Summer's Gonna Hurt like a MotherFucker" Maroon 5 - V (reissue) ☑Y ☑Y
"The Original High" Adam Lambert - The Original High ☑Y ☑Y
"Rumors" (feat. Tove Lo) ☑Y ☑Y
"Evil in the Night" ☑Y ☑Y
"Run Away with Me" Carly Rae Jepsen - Emotion ☑Y ☑Y
"Send My Love (To Your New Lover)" Adele - 25 ☑Y ☑Y
"Rest Your Love" The Vamps - Wake Up ☑Y ☑Y
2016 "Just Like Fire" PinkAlice Through the Looking Glass ☑Y ☑Y
"Can't Stop the Feeling!" Justin Timberlake - Trolls: Original Motion Picture Soundtrack ☑Y ☑Y
"Hair Up" ☑Y ☑Y
"Still Falling For You" Ellie Goulding - Bridget Jones's Baby ☑Y ☑Y
2017 "Bon Appétit" (feat. Migos) Katy PerryWitness ☑Y ☑Y
"Roulette" ☑Y ☑Y
"Revenge" (feat. Eminem) Pink - Beautiful Trauma ☑Y ☑Y
"Whatever You Want" ☑Y ☑Y
"Secrets" ☑Y ☑Y
"...Ready for It?" Taylor Swift - Reputation ☑Y ☑Y
"Gorgeous" ☑Y ☑Y
"End Game" (feat. Ed Sheeran & Future) ☑Y ☑Y
"I Did Something Bad" ☑Y ☑Y
"Don't Blame Me" ☑Y ☑Y
"Delicate" ☑Y ☑Y
"So It Goes..." ☑Y ☑Y
"King of My Heart" ☑Y ☑Y
"Dancing with Our Hands Tied" ☑Y ☑Y
2018 "Get Up and Fight" MuseSimulation Theory ☑Y ☑Y
2019 "I Don't Care" (with Justin Bieber) Ed SheeranNo.6 Collaborations Project ☑Y ☑Y
''Beautiful People'' (feat. Khalid) ☑Y ☑Y
''Take Me Back to London'' (feat. Stormzy) ☑Y
''Remember the Name'' (feat. Eminem and 50 Cent) ☑Y ☑Y
''Only Human'' Jonas BrothersHappiness Begins ☑Y ☑Y
"(Hey Why) Miss You Sometime" P!nkHurts 2B Human ☑Y ☑Y
''Glad He's Gone'' Tove LoSunshine Kitty ☑Y ☑Y
2020 ''X'' Jonas BrothersXV ☑Y ☑Y
"Diamonds" Sam SmithLove Goes ☑Y ☑Y

Billboard Hot 100[edit]

The following singles peaked inside the top ten on the Billboard Hot 100.

Number-one singles
  • "So What"
  • "3"
  • "Raise Your Glass"
  • "Moves like Jagger"
  • "We Are Never Ever Getting Back Together"
  • "One More Night"
  • "Shake It Off"
  • "Blank Space"
  • "Bad Blood"
  • "Can't Stop the Feeling!"
Top 10 Hits
  • "Whataya Want from Me"
  • "DJ Got Us Fallin' in Love"
  • "Fuckin' Perfect"
  • "Loser Like Me"
  • "I Wanna Go"
  • "Payphone"
  • "Scream"
  • "I Knew You Were Trouble"
  • "Problem"
  • "Animals"
  • "Style"
  • "Wildest Dreams"
  • "Just like Fire"
  • "Send My Love (To Your New Lover)"
  • ''...Ready for It?''


Grammy Awards[6]


  1. ^ "Maratone". Maratone official website. Archived from the original on 2 February 2009. Retrieved 2 February 2009.
  2. ^ Eigert, Av Ann-Marie (6 November 2008). "Pink hyllade svenske Johan". Expressen (in Swedish). AB Kvällstidningen Expressen. Archived from the original on 2 February 2009. Retrieved 5 January 2009.
  3. ^ "There is value in music". Retrieved 20 January 2019.
  4. ^ "How Ariana Grande and Max Martin Made 'Problem' the Song of the Summer". Rolling Stone. 22 May 2014. Retrieved 2 June 2014.
  5. ^ Lamington23 (24 June 2014). "Refused on lying, selling out and Taylor Swift". FasterLouder. FasterLouder Pty Ltd. Archived from the original on 28 June 2015. Retrieved 28 June 2015.
  6. ^ "Shellback". Recording Academy. Retrieved 12 February 2018.

External links[edit]