This study examines the formation of a unique chromatic and formal language in Musica Ricercata by György Ligeti. The study begins by examining statements from an interview with Ligeti conducted by Ove Nordwall in 1979. The interview discusses his compositional experiments from the early 1950s, the period in which Musica Ricercata was composed. Working from Ligeti’s words, “simple structures” are defined as repeating formations of rhythms and intervals with easily discernable features. These features must be salient such that when the structure is altered, it is still clearly and audibly recognizable. The musical and political environment in Hungary at the time is established, providing context for this early experimentation with compositional parameters. The analysis begins with an overview of the entire work, outlining developments of pitch-class density, symmetrical pitch-class structures, and notated accelerandi over the course of the multi-movement work. Analyses of simple structures in each movement elucidate both Ligeti’s experimental approaches to chromaticism, along with more traditional aspects, with special reference to Bartók’s compositional style.

Este trabalho acata Musica ricercata (1951-53), importante obra do período húngaro de György Ligeti, sob o ponto de vista da performance musical. Estruturado em três capítulos, no primeiro investiga a maneira como o conjunto de onze peças reflete o reposicionamento artístico e político de Ligeti nos anos anteriores à sua saída de Budapeste em direção à Europa Ocidental, ocorrida em 1956, e se firma como marco de sua independência artística. No segundo capítulo, centramos a pesquisa no projeto composicional de Musica ricercata com objetivo de identificar tópicos de sua organização estrutural que seriam aprofundados por Ligeti em sua obra madura e, consequentemente, reafirmam a profunda reorientação tratada no capítulo anterior. Por fim, o terceiro capítulo aborda cada uma das onze peças do ciclo e investiga as relações de reciprocidade entre seu pensamento composicional, a notação empregada pelo compositor e, finalmente, sua execução. / The present study regards Musica ricercata (1951-53), an important work from György Ligeti\'s Hungarian period, from the perspective of musical performance. Structured in three chapters, the first one investigates how this collection of eleven pieces reflects both Ligeti\'s artistic and political positioning in the years that preceded his exit from Budapest towards Western Europe in 1956 and stands out as a turning point for his artistic independence. In chapter 2, the research focuses on Musica ricercata´s compositional project in order to identify some topics of its structural organization which would be amplified by Ligeti on his mature work and, consequently, reaffirm the deep reorientation considered in chapter 1. Finally, the third chapter discuss each one of the eleven pieces from the cycle in order to investigate reciprocity relations among his compositional thinking, the notation used by the composer and, eventually, their performance.

Este trabalho acata Musica ricercata (1951-53), importante obra do período húngaro de György Ligeti, sob o ponto de vista da performance musical. Estruturado em três capítulos, no primeiro investiga a maneira como o conjunto de onze peças reflete o reposicionamento artístico e político de Ligeti nos anos anteriores à sua saída de Budapeste em direção à Europa Ocidental, ocorrida em 1956, e se firma como marco de sua independência artística. No segundo capítulo, centramos a pesquisa no projeto composicional de Musica ricercata com objetivo de identificar tópicos de sua organização estrutural que seriam aprofundados por Ligeti em sua obra madura e, consequentemente, reafirmam a profunda reorientação tratada no capítulo anterior. Por fim, o terceiro capítulo aborda cada uma das onze peças do ciclo e investiga as relações de reciprocidade entre seu pensamento composicional, a notação empregada pelo compositor e, finalmente, sua execução. / The present study regards Musica ricercata (1951-53), an important work from György Ligeti\'s Hungarian period, from the perspective of musical performance. Structured in three chapters, the first one investigates how this collection of eleven pieces reflects both Ligeti\'s artistic and political positioning in the years that preceded his exit from Budapest towards Western Europe in 1956 and stands out as a turning point for his artistic independence. In chapter 2, the research focuses on Musica ricercata´s compositional project in order to identify some topics of its structural organization which would be amplified by Ligeti on his mature work and, consequently, reaffirm the deep reorientation considered in chapter 1. Finally, the third chapter discuss each one of the eleven pieces from the cycle in order to investigate reciprocity relations among his compositional thinking, the notation used by the composer and, eventually, their performance.

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