graduated in history and philosophy at the Philosophical Faculty of Masaryk University in Brno, 1949 (musicology)
title of PhDr. at the Comenius University Philosophical Faculty in Bratislava, doctoral work Slovenská opera po Bellovi (Slovak Opera After Bella)
pedagogue at the University of Pedagogy in Bratislava. From 1959 to his retirement, pedagogue at the Department of Musicology at Comenius University Philosophical Faculty in Bratislava
degree of CSc. for his work Leoš Janáček a Slovensko (Leoš Janáček and Slovakia: this formed part of his research on Czech-Slovak musical relationships)
In the field of research he focused on the history of music, history of Czecho-Slovak musical relationships, musical pedagogy and receptive musical education.
Jozef Tvrdoň’s publications comprise musico-theoretical textbooks and scripts, along with popularising works such as Hudba okolo nás (Music Around Us, 1962). He is the author of a number of musico-educational programmes broadcast by Czechoslovak Radio in Bratislava and TV programmes.