Shellback (record producer)

Shellback
Shellback
	Shellback in 2015
Background information
Birth name	Karl Johan Schuster
Born	1 February 1985 (age 39); Karlshamn, Blekinge, Sweden
Genres	Pop; electropop; dance-pop; pop rock; melodic death metal;
Occupations	Record producer; songwriter; musician;
Years active	2003–present
Formerly of	Blinded Colony

Karl Johan Schuster (Swedish pronunciation: [ˈjûːan ˈɧʏ̌sːtɛr]; born 1 February 1985), known professionally as Shellback, is a Swedish record producer and songwriter. He 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.

Shellback initially started his career as a heavy metal guitarist before transitioning into pop music production and songwriting.

Shellback regularly collaborates with songwriter Max Martin and together they have produced, written, or co-written songs for various artists such as 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. He co-wrote and co-produced the song "Can't Stop the Feeling!" along with Martin and Justin Timberlake for the animated film Trolls (2016), earning a nomination for the Academy Award for Best Original Song in 2017.