The main objective of this research is to study three aleatory pieces by the composer from Pelotas/RS Luiz Carlos Lessa Vinholes: Instrução 61, for any four instruments (1961); Instrução 62, for keyboard instruments (1962); and Peça/Pessa para fazer Psiu/Xi, for mouthes (1979) and, from the analysis of this material, create pedagogical activities for use in musicalization classes with children from six to ten years old. This work has been developed from the following questions: How to stimulate the child`s imagination and creativity? What kind of music or contemporary works would be appropriate for such purpose? The pieces by L. C. Vinholes are presented as possible answers to these questions, precisely because they are aleatory, do not require any knowledge of traditional music and, better yet, for using new codes and notation of easy reading and understanding. To prove this hypothesis, the researcher used the qualitative approach focusing on obtaining descriptive data through direct and interactive contact with the object of study situation. In the grounds, the main pedagogical approaches of the second half of the twentieth century were discussed in order to understand the educational assumptions of contemporary educators and contextualize the pieces by Vinholes in the educational scope. The paper also proposes the creation of a site for the preservation and dissemination of some aspects of the activities and work of L. C.Vinholes, as well as to make available the present research. The author believes that this work can contribute to the rise of a new thinking, assumptions, studies and researches in the field of music pedagogy and contemporary repertoire, especially in training and didactic/pedagogical attitude of teachers of music and musicalization.