Question: Who wrote somebody that i used to know?
Disambiguated questions and answers: question: Who wrote the song somebody that i used to know?
Who wrote the True Blood episode somebody that i used to know?
answer: Wally de Backer
Gotye
Wouter "Wally" De Backer
Mark Hudis
Natural Questions answer: Gotye (from the Wikipedia article "Somebody That I Used to Know")