Following World War II, Ligeti returned to his studies in Budapest, Hungary, graduating in 1949 from the Franz Liszt Academy of Music. He studied under Pál Kadosa, Ferenc Farkas, Zoltán Kodály and Sándor Veress. He went on to do ethnomusicological research into the Hungarian folk music of Transylvania. However, after a year he returned to Franz Liszt Academy in Budapest, this time as a Teacher of harmony, counterpoint and musical analysis, a position he secured with the help of Kodály and held between 1950 and 1956. As a young Teacher, Ligeti took the unusual step of regularly attending the lectures of an older colleague, the Conductor and musicologist Lajos Bárdos, a conservative Christian whose circle represented for Ligeti a safe haven, and whose help and advice he later acknowledged in the prefaces to his own two harmony textbooks (1954 and 1956). However, communications between Hungary and the West by then had become difficult due to the restrictions of the communist government, and Ligeti and other artists were effectively cut off from recent developments outside the Eastern Bloc.