Bono -- in U2 -- once stated the difference between a pop band and a rock band that when the pop band is pleased the rock band is angry. When the pop band trolls on the rock band always is in search for something else, some alternatives to the present. That's why we are a rock band. Not because we are generally ill-humoured but for the dimension in the dissatisfaction - of curiosity, discoveries, a pathos for improving the world. Pop bands are satisfied, rock bands wants to develop. That is a backbone, an attitude towards the world, a philosophy. Rock band or a library -- makes no difference.