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1936 – 1937
organ course for Town School of Music in Bratislava
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from 1937
choralist and organist of the Bratislava Church Music Association (Kirchenmusikverein)
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1938 – 1943
Musical and Dramatic Academy in Bratislava (organ – A. Ledvina, Š. Németh-Šamorínsky, J. Weber)
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1943 – 1946
Musical and Dramatic Academy in Bratislava (conducting – J. Vincourek, K. Schimpl)
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1948 – 1953
conductor of the professional Czechoslovak Radio Mixed Choir in Bratislava (later Slovak Philharmonic Choir)
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1949 – 1953
Academy of Performing Arts, Bratislava (conducting – Václav Talich)
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1954 – 1955
study stay with Jevgenij Mravinsky, conductor-in-chief of the Leningrad Philharmonic (1955 as his assistant)
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1955
conductor of the Czechoslovak Radio Symphony Orchestra in Bratislava
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1956 – 1961
conductor-in-chief of the Czechoslovak Radio Symphony Orchestra in Bratislava
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1959
second conductor of the Czech Philharmonic (along with Karlo Ančerle) on a three-month tour in USA, Australia, New Zealand, Japan, China, India, and the former Soviet Union
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1959 – 1970
Union of Slovak Composers (1961 – 1963 president of the concert artists’ section, 1959 – 1963 and 1967 – 1969 member of the committee and the presidium, 1969 – 1970 vice-president of Union)
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1961 – 1981
conductor-in-chief and 1961 – 1968 simultaneously artistic director of Slovak Philharmonic
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1965, 1973
conductor-in-chief BBC Australia Radio Orchestra in Adelaide
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1967
tour with Czech Philharmonic in USA and Canada
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1972 – 1975
conductor-in-chief of the Prague Symphony Orchestra FOK (as first Slovak conductor holding the position of conductor-in-chief of a Czech body)
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from 1976
lecturer in conducting at the Academy of Performing Arts, Bratislava (from 1978 professor)
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1983 – 1985
conductor-in-chief State Philharmonic, Košice
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- member of the Slovak Music Council and member of the festival juries of Bratislava Music Festival, Prague Spring and other selection commissions and juries