Martins de Castro Chaib F, Teixeira Bittencourt LA. Instrumental Substitution and Repertoire Dissemination: a report on Directionlessness (2020/2022), by Luís Bittencourt. Rev. Vórtex [Internet]. 2026 May 25 [cited 2026 Oct. 12];14:1-42. Available from: https://periodicos-hml.unespar.edu.br/vortex/article/view/11015