Issue 10-11 of Musicology (Musicología) is the result of an effort to include the widest possible range of new authors and articles, in order to encourage discussion about more methodological trends in our field, as they appear in the international level. This is why in this issue some texts appear that do not treat their epistemological background explicitly. Other texts – that appear in the present issue – treat precisely the very same epistemological foundations of musicological fields and methods. In both cases the authors deal with problems that concern the nature of music and its phenomena today. In both cases the authors treat with problems that concern re-defining the “boundaries and method of musicology” (G. Adler) from a contemporary point of view.Musicology is especially interested in historical research on the unknown aspects of modern Greek music, considering that inasmuch relevant data and information is completed, the necessary conditions are created for a proper historic and aesthetic evaluation of Greek composers’ work.In this sense, the contents of this issue cover four major subjects: Aesthetics of music, Epistemology of musicology, contemporary music and Modern Greek art music.Four articles appear on the first subject that includes Aesthetic Theory, Philosophy of Music, Historical Aesthetics, Interpretation and Analysis (Markos Tsetsos, Ion Zottos, Alexandra Mouriki and George Zervos). This section begins with one of the least known texts written by T. W. Adorno (“Über einige Relationen zwischen Musik und Malerei”). This text still remains well timed and this is because it deals with the principles of modern research on convergence between music and plastic arts.The second part of this issue includes subjects on sociology of music, aesthetics of musical perception and epistemology. This section begins with the first chapter of Kurt Blaukopf’s Musik im Wandel der Gesellschaft (English title: Music in a Changing Society), translated by A. Baltzis. This translation introduces for the first time in Greek one of the most important sociological approaches to music.In this section appears a critical introduction to Kurt Blaukopf’s theory by Alexandros Baltzis, and some methodologically oriented articles by George Fitsioris, Panos Vlagopoulos and Katy Romanou, as well as a chapter from Jules Verne’s book Paris au XX siècle – a text that approaches in a most comprehensive, plausible and critical way some of the issues that modern epistemologists are trying to formulate in vain.In the section on contemporary music are included the articles of N. Mamalis, about the so-called “spectral music” of the Itinéraire group, and Ch. Spiridis, about I. Xenakis’ music.