Diedrich Diederichsen (Hamburg 1957) lives and works in Berlin. In the eighties, he was an editor of music magazines such as "Sounds and Spex " and in the nineties, he taught at art academies and universities in Germany, the United States and Austria. He teaches at Merz Akademie, Stuttgart. He has published many books and is a regular contributor to magazines such as "Art Forum", "Texte zur Kunst", "Tageszeitung" and "SüddeutscheZeitung". On 1998, Diedrich Diederichsen was invited to give a conference at MACBA in the context of the seminar Out of Actions celebrated as part of the Out of Actions exhibition. This lecture was entitled “Paradoxical Models of Authenticity in Late 60s/Early 70s Rock-Performance.”