This paper contains a productive confrontation/conversation between the concept of resonance by Hartmut Rosa and the negative Dialectics of T.W. Adorno. As its starting point it takes Rosas proposition, that his concept is in advantage to Adornos, in so far it contains an elabo-rated concept of the good life, while Adorno‘s seems to remain dark and pessimistic. Based on that, this paper tries to show, why the „pessi-mism“-label doesn‘t fit really to Adornos work. Rather there are very reasonable concerns, that lead Adorno to the view he holds. In this pa-per the concept of resonance meets Adornos concerns, that can be summed up by the term „metamorphosis of critique to affirmation“. In the course of this paper, I try to reveal with Adornos thoughts, that because of the method of social critique Rosa applies, his theory of re-sonance tends to perform this „metamorphosis“ literally behind his back.