He studied at the Conservatoire de Paris where he was a pupil of Jean-Pierre Maurin and later appeared as soloist with French orchestras.

His notable students include Jascha Brodsky and Ivan Galamian, both of whom became influential violin teachers of the latter part of the twentieth century.

With the violinist and chamber musician Suzanne Chaigneau, Capet founded the Institut moderne du violin in 1924.

[4] Capet wrote a book on "Superior Bowing Technique" which is an essential treatise on all aspects of bowing technique for the violin; reprints are available (including translations into English by Margaret Schmidt and Stephen Shipps, and into Persian by Mohsen Kazemian [5]).

"[6] Mr. Capet is a Master performer on the violin with a wonderful technique and a warm and powerful tone.