 One of the most important sources for nueva canción here is Chilean cueca, a guitar based rural song-form.Parra and her children Isabel and Ángel also founded cultural centers like La Carpa de la Reina and Peña de los Parra that provided training and performance opportunities and functioned as organizing center for leftist political activism.Until the U.S.-backed coup forced its closure in 1973, Peña de los Parra welcomed almost all of the major figures associated with early Nueva Canción, including Chileans Patricio Manns, Víctor Jara, Rolando Alarcón, Payo Grondona, Patricio Castillo, Homero Caro, Tito Fernández, and Kiko Álvarez, as well as non-Chilean musicians, such as César Isella and Atahualpa Yupanqui from Argentina and Paco Ibañéz of Spain.