dr, *1985 SE, Karlshamn Municipality
Musician / Songwriter / Producer
A.k.a. Karl Johan Schuster
Karl Johan Schuster (Born February 1, 1985), known as Shellback, is an artist from Karlshamn, Sweden. Before he became part of Max Martin's Maratone production studio in 2007 he was a a drummer in local indierock bands in Karlshamn. He also was a member of hardcore/metal band Blinded Colony. He co-wrote Pink's 2008 single "So What" , and Britney Spears's 2008 single "If U Seek Amy".
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