linguistic:paraphrasing
Compositions in Hungary

Many of Ligeti's earliest works were written for chorus and included settings of folk songs. His largest work in this period was a graduation composition for the Budapest Academy, entitled Cantata for Youth Festival, for four vocal soloists, chorus and orchestra. One of his earliest pieces now in the repertoire is his Cello Sonata, a work in two contrasting movements that were written in 1948 and 1953. It was initially banned by the Soviet-run Composer's Union and was not performed publicly for a quarter of a century.

Ligeti's earliest works are often an extension of the musical language of Béla Bartók. Even his piano cycle Musica ricercata (1953), though written according to Ligeti with a "Cartesian" approach, in which he "regarded all the music I knew and loved as being... irrelevant", the piece has been described by one biographer as from a world very close to Bartók's set of piano works, Mikrokosmos. Ligeti's set comprises eleven pieces in all. The work is based on a simple restriction: the first piece uses exclusively one pitch A, heard in multiple octaves, and only at the very end of the piece is a second note, D, heard. The second piece uses three notes (E ♯, F ♯, and G), the third piece uses four, and so on, so that in the final piece all twelve notes of the chromatic scale are present.

Shortly after its composition, Ligeti arranged six of the movements of Musica ricercata for wind quintet under the title 'Six Bagatelles for Wind Quintet'. The Bagatelles were performed first in 1956, but not in their entirety: the last movement was censored by the Soviets for being too 'dangerous'.

Because of Soviet censorship, his most daring works from this period, including Musica ricercata and his String Quartet No. 1 Métamorphoses nocturnes (1953–1954), were written for the 'bottom drawer'. Composed of a single movement divided into seventeen contrasting sections linked motivically, the First String Quartet is Ligeti's first work to suggest a personal style of composition. The string quartet was not performed until 1958, after he had fled Hungary for Vienna.