Born Nov. 2, 1922, in Szeged, Hungary, he was the son of Vilmos and Klara (Krausz) Sebok. Sebok gave his first solo piano recital at age 11. At age 16, he enrolled in the Franz Liszt Academy, where he studied with Zoltan Kodaly and Leo Weiner. After graduation, he appeared in concert for 10 years, performing in Eastern and Central Europe and the former Soviet Union.
In 1949 he was named professor of music at the Bela Bartok Conservatory in Budapest. After the Hungarian revolt in 1956, he settled in Paris. In 1957 the first of his many recordings won the Grand Prix du Disque.
Sebok was guest professor of the Berlin Hochschule der Kunste in Germany and was an honorary life member of Tokyo's Toho School of Music. He was guest teacher at the Banff Centre for the Arts, the Amsterdam Conservatorium, the School of Music in Barcelona, and the Hochschule fuer Musik in Stuttgart.He received numerous honors, including the Hungarian government's Cross of Merit, La Medaille de la Ville de Paris, Echelon Vermeille, and the Kulturpreis des Staates Wallis, (Prix de Consecration). In 1996, the French government bestowed on him the decoration Chevalier de L'Ordre des Arts et des Lettres.
Sebok is survived by his wife, Eva (Mandel) Sebok, and one sister, Eva Sebok of Budapest, Hungary.