He started his scientific education at the Sorbonne and then completed it at the Université Pierre-et-Marie-Curie, obtaining a degree in physical chemistry under the supervision of professor René Freymann.

[2] From a young age, Langevin had a deep interest in classical music, listening to Anton Bruckner's symphonies on radio recordings during his youth and meeting conductor Roberto Benzi.

[3] Having completed his scientific degrees, he decided to write a thesis under the supervision of Daniel Charles at the Centre Universitaire de Vincennes about 19th century Austrian music, focusing on composer Anton Bruckner and the so-called ethnoromantic period.

Specifically, he wrote articles, monographs and books about Anton Bruckner, Franz Schubert, Guillaume Lekeu, Albéric Magnard, Joseph-Guy Ropartz and Charles Koechlin.

He was also interested in works by Hugo Wolf, Gustav Mahler, Arnold Schoenberg, Franz Schmidt, Ferruccio Busoni,[7] Leoš Janáček and Carl Nielsen.