At 19, he won the first prize at the Conservatoire de Paris and the first medals of chamber music and solfège.
This string quartet enjoyed an international reputation and recorded numerous discs from Johann Sebastian Bach to Darius Milhaud, with a preference for Joseph Haydn, Mozart, Beethoven and French music.
He won a Grand Prix du disque for the quartets by Claude Debussy and Maurice Ravel (Deutsche Grammophon).
In 1959, he founded the "Orchestres de jeunes Alfred Loewenguth" (OJAL), and created the Sceaux Orangerie music festival in 1969.
The film director Benoît Jacquot devoted a documentary "Enfance Musique"[2] to him in 1979.