[3] Bloodshy & Avant notably co-wrote and produced Britney Spears' single "Toxic",[3] which earned them a Grammy Award for Best Dance Recording in 2005.

[13][14] The duo won Coachella 2014's Best Dance Music Moment from Billboard, beating Calvin Harris and Chromeo with 52% of the vote.

[15] Galantis had international success with their single "Runaway (U & I)" in October 2014,[16] which received a nomination for Best Dance Recording at the 58th Grammy Awards.

[17] Galantis released their debut album Pharmacy on 8 June 2015,[18][19] and that year the duo was named Best Breakthrough Artist at the International Dance Music Awards.

"[18] He began working in the studio mixing and producing music as a teenager, and held stints with Swedish pop groups such as Goldmine, who at one point opened for the Fugees.

[5] Bloodshy and Avant encountered and befriended American vocalist Andrew Wyatt in 2007, formulating the idea for a future collaboration.

[8] Continuing to mix and perform with Bloodshy and Avant while with Miike Snow, in 2010 Karlsson worked with Sky Ferreira to produce singles like "One", which was released in August.

[28] In 2011, Karlsson alone co-produced two songs for Britney Spears' 7th studio album Femme Fatale, "How I Roll" and "Trip to Your Heart".

[5] In July 2011, Karlsson co-founded the Swedish artist collective and record label INGRID along with Miike Snow, Peter Bjorn and John, Lykke Li, Coco Morier and Dungen.

[30] They also run a label called Ändersson with signed artists and musicians including Little Majorette, Sky Ferreira and Meadow.

[4] On 24 January 2012, Miike Snow released "Black Tin Box", a collaboration with Swedish singer Lykke Li.

It met with a largely positive response in publications such as AllMusic[33] Rolling Stone,[34] and NME,[35] with a mixed review from Pitchfork Media.

[42] Its controversial video premiered on Stereogum,[40] and featured the first instance of the "Seafox", a band mascot created by visual artist Mat Maitland.

[16] Rolling Stone opined that the song was "riding high on unapologetically major-key synths and pitched-up vocals", also writing "the summer anthem added an organic touch to the undeniable earworm qualities of the best Scandinavian pop.

[14] Galantis released the single "Gold Dust" on 19 February 2015 through Stereogum, which reached number 1 on Hype Machine's Popular Chart.

[53] In April 2015, Galantis released their single "Peanut Butter Jelly", which Rolling Stone called a "retro, funky slice of disco revival, with the kind of unforgettable, sing-along vocal hook destined for clubs, parties and spin classes.

"[50] Time magazine wrote that the "infectious" track "samples the 1960s soul singer Bettye Swann, lending major retro vibes to its pulsing contemporary beat.

[55] Karlsson was touring with Galantis at the end of 2015 as well, with plans to hit venues in Las Vegas and other North American cities.