20th-century French male musicians

Thomas Pablo Croquet (born 21 November 1976), known as Thomas Mars, is a French musician and the lead singer of the French indie pop band Phoenix.

Pierre Chrétien Degeyter (French: [pjɛʁ kʁetjɛ̃ də ɡetɛʁ], Flemish: [də ˈɣɛitər]; 8 October 1848 – 26 September 1932) was a Belgian-French socialist and a composer, known for writing the music of The Internationale.

René-Emmanuel Baton, known as Rhené-Baton (5 September 1879 – 23 September 1940), was a French conductor and composer. Though born in Courseulles-sur-Mer, Normandy, his family originated in Vitré in neighbouring Brittany. He returned to the region at the age of 19, and many of his compositions express his love of the area. He also had close relationships with composers of the Breton cultural renaissance, notably Guy Ropartz, Paul Le Flem, Paul Ladmirault and Louis Aubert. As a conductor he was notable for his attempts to expand appreciation of classical music.

Jean-Claude Probst (born 7 December 1935), known professional as Jean-Claude Casadesus, is a French conductor.

André Alphonse Toussaint Wormser (1 November 1851 – 4 November 1926) was a French Romantic composer.

Roger Guérin (9 January 1926, Saarbrücken – 6 February 2010, Nîmes) was a French jazz trumpeter and singer.
Initially a violinist, Guérin studied trumpet and cornet at the Paris Conservatory and won a first prize there as a teenager.
He began working professionally in 1947, playing with Aimé Barelli, Django Reinhardt, Don Byas, Hubert Fol, James Moody, Benny Golson, Bernard Peiffer, Fats Sadi, Lucky Thompson, Kenny Clarke, Blossom Dearie, Martial Solal, Michel Legrand and André Hodeir.
Guérin played at the 1958 Newport Jazz Festival with a youth ensemble, and played in Les Double Six in 1959, later returning to this group. He replaced Clark Terry in Quincy Jones's Big Band in 1960. He worked on the soundtrack to the film Paris Blues in 1961 with Duke Ellington. He worked extensively as a vocalist for Michel Legrand.
Guérin has over 150 album credits to his name. He won the Prix Django Reinhardt in 1959.

Franck Pourcel (14 August 1913 – 12 November 2000) was a French composer, arranger, and conductor of popular and classical music.

Maurice Thiriet (French: [tiʁjɛ]; 2 May 1906 – 28 September 1972) was a French composer of classical and film music.

Maxime Jacob, or Dom Clément Jacob, (13 January 1906 in Bordeaux – 26 February 1977 in En-Calcat Abbey, Dourgne, Tarn) was a French composer and organist.

Louis Charles Bonaventure Alfred Bruneau (3 March 1857 – 15 June 1934) was a French composer who played a key role in the introduction of realism in French opera.