Commissioned by the Institute Goethe in Munich, Germany; this work was recommended at the International Rostrum of Composers/UNESCO, Paris 1973; First performance on 5 August 1972 at Sala Cecilia Meireles, Rio de Janeiro, Brazil, by the Ensemble Pro-Musica Köln, Maria Lucia Godoy, soprano & Johannes Homberg, conductor; duration: 16mins; recordings: LP Philips/Phonogram 6833.177/178 and Lemán Classics Switzerland LC 44.100.Score and piano reduction on sale; orchestral parts on hire.
Instrumentación: String orchestra (minimum 4.3.3.2.2.)
Edición: Marlos Nobre Edition
Puede adquirirse en: marlosnobre.edition@uol.com.br

Hizo estudios de composición con Hans J. Koelreutter y Camargo Guarnieri. Posteriormente, con Ginastera, Messiaen, Malipiero, Copland y Dallapiccola en el Centro Latinoamericano de Altos Estudios Musicales del Instituto Torcuato Di Tella de Buenos Aires.