
Sheet music (Amy Sussman/AFP)
On the computer was Kocsis' completed version of "Moses und Aron", an opera which Schoenberg composed in 1930-32 but never finished. Schoenberg (1874-1951) completed only two acts, leaving a few sketches for the third act.
Kocsis had received permission from Schoenberg's heirs this year to complete the last act and his version was to be premiered in Budapest on January 16.
Kocsis said the performance may still go ahead, depending on whether he can reconstruct his version or if the laptop is recovered.
The 57-year-old pianist and conductor is one of Hungary's most highly regarded musicians. He studied piano and composition at the Bela Bartok Conservatory and then the Franz Liszt Academy of Music.
He has performed with some of the world's top orchestras, including the Chicago Symphony Orchestra, the Dresden Staatskapelle, the New York Philharmonic, the London Philharmonia and the Vienna Philharmonic.
Kocsis has been a conductor with the Budapest Festival Orchestra and the Hungarian National Philharmonic, where he is currently musical director.
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Kocsis had received permission from Schoenberg's heirs this year to complete the last act and his version was to be premiered in Budapest on January 16.
Kocsis said the performance may still go ahead, depending on whether he can reconstruct his version or if the laptop is recovered.
The 57-year-old pianist and conductor is one of Hungary's most highly regarded musicians. He studied piano and composition at the Bela Bartok Conservatory and then the Franz Liszt Academy of Music.
He has performed with some of the world's top orchestras, including the Chicago Symphony Orchestra, the Dresden Staatskapelle, the New York Philharmonic, the London Philharmonia and the Vienna Philharmonic.
Kocsis has been a conductor with the Budapest Festival Orchestra and the Hungarian National Philharmonic, where he is currently musical director.
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