Frémiot was trained in piano and organ and later studied counterpoint and harmony at the Conservatorie de Paris with Olivier Messiaen and Noél Gallon. From 1950-1962, he was artistic director of the publishing house Le Chant du Monde. Since 1966, he has been a professor of music history at the Conservatoire de Musique de Marseille. In 1968 he taught the first class of electro-acoustic music ever been offered at a French conservatory. From 1968-83, he was a lecturer at the Université d’Aix-Marseille. From 1985-1986, he was a lecturer at the University of Aix-en-Provence. In 1989, he became an honorary professor at the Conservatoire National de Region in Marseille, and in 1990, Director of Laboratoire de Musique et Informatique Marseille. Among his many works is the musical score for Ubu Roi, the play by Alfred Jarry staged in Paris in 1946. His multimedia works include The Christmas Anawi, which won a prize in 1962 for the best direction of an audiovisual work for children, David, King of Isdraël in 1969, and the music forSpiral, a short film by J. P. Prat, also in 1969. He has written about the possibilities and dangers of multimedia works, warning that they are layered compositions, drawing from discrete disciplines which all have their own traditions; for that reason, they frequently require collaboration to be effective. He believes in subordinating technology to aesthetics, preferring that the dynamics of aesthetics take precedence over work created simply because it is possible technologically.