ESTUDIO DE LOS MÉTODOS DE SOLFEO ESPAÑOLES DEL SIGLO XIX Y PRINCIPIOS DEL XX ABSTRACT The present study consists of an analysis of the contents in the existing methods of “solfeo” in the period that goes since the beginning of the XIX century until 1920, from Spanish authors exclusively. After the declaration of objectives and methodology, the state of the question is exposed analyzing the antecedents in the teaching of this discipline. The central body of the work, in which 37 authors have been analyzed, those which represent a total of 70 books or parts of methods, consists in a detailed examination of their pedagogical contents, the suitability of their exposition and their practical effectiveness, comparing them with the little existing programs of this subject at that period, to distinguish, through this comparative methodology, if the contents responded to a pre-existing plan or to personal initiatives; and also to contrast them with the modern pedagogical principles with the intention of investigating their degree of use in our time. This thickness of the thesis is followed by a comparative study of all the methods as for their contents, to reach a conclusion on different texts from education of the “solfeo” at the studied time. The work is completed with several appendices; one referenced to the 2 and 3 voices lessons of “solfeo” of Salvador Giner, discovered, compiled, arranged and published by the author of this thesis, which, although they do not constitute a method, they are, really, lessons of that period. These are analyzed separately in all rhythmical, melodic, motive, harmonic and formal aspects, reaching deductions likewise. In other appendices, facsimiles of the covers of all the methods and some other documents of interest are shown.