Brietzke, Marta Macedo. “Cirandinhas Nº 9 by Heitor Villa-Lobos: A Pedagogical Proposal for the Musical Formation”. Literartes, vol. 1, no. 10, June 2019, pp. 139-56, https://doi.org/10.11606/issn.2316-9826.literartes.2019.158047.