Sospeso performs music by Juan José Iturriberry on the American Voices concert at the Americas Society Fortieth Anniversary Celebration on November 9, 2005.   

Mr. Iturriberry began his piano studies with Genoveva Fariña de Praga in Montevideo and later perfected them with Numen Vilariño. He subsequently studied musicology at the Facultad de Humanidades y Ciencias in Montevideo and counterpoint, harmony, musical forms, serialism, and the twelve-tone system with Angelo Turriziani. He then studied composition with Carlos Estrada, Manuel Fernández Espiro, Antonio Mastrogiovanni, and Héctor Tosar at the Escuela Universitaria de Música. In addition, he twice participated in the Cursos Latinoamericanos de Música Contemporánea in Piriápolis, Uruguay in 1971-72.

He has earned many honors, including First Prize in the competition of the Escuela Universitaria de Música (1969, for Variaciones) and a performance at the ISCM World Music Days in Boston (1975). Moreover, he was chosen by the Agrupación Musical Anacrusa in Santiago, Chile to participate in the Encuentro Latinoamericano de Música Contemporánea (1989).

He is also active in other positions. He worked as a critic for the newspapers Época in 1967 and Lea in 1989 and also for the weekly publications Marcha in 1969-70 and Brecha in 1986-87, all in Montevideo. He was invited as a specialist for SGAE, the Spanish society of authors and composers, to work on the Diccionario de la Música Española e Hispanoamericana in 1990-91. He is an active member of the Núcleo Música Nueva de Montevideo and of the Sociedad Uruguaya de Música Contemporánea, the Uruguayan section of ISCM. He has taught at various institutions, including the Artigas Institute for Teachers (IPA), the Center for the Arts, the Escuela Universitaria de Música, the Monseñor Nicolás Luquese, and the Santa Luisa de Marillac.