Moreira Júnior, Nilton Antônio, and Fausto Borém. 2011. “Ragtime Traces in the Choro Segura Ele [Hold him!] by Pixinguinha: Composition, Performance and Iconography After the Trip to Paris in 1922”. Per Musi, no. 23 (January):1-10. https://periodicos.ufmg.br/index.php/permusi/article/view/41729.