Ledoux's pieces show an approach calling on musical synthesis in order to print within his music the many qualities of the fragmented world of today. The fascination exercised by the phenomenon of sound has incited the composer to a certain acoustical introspection, helped by recent technology, computer programmes, acoustical analysis and sound synthesis (echoes of researches made in the electronic music studios of Liege and those of Ircam). His interest in Eastern music has led him to reflect on instrumental ornementation as practised in the East, as well as on the physical movement relationship between the performer and his (her) instrument. Taken in this way, the musical work of Claude Ledoux synthesises these different elements in a luxuriant environment – sometimes microtonal -, with a desire to renew the phenomenon of melody without condescension, the expression of a solo instrument or an orchestra where emotion comes from the meeting of different imaginary cultures.

Because of his passion for Asian sounds, he travelled in several eastern countries in order to make researches and to learn the traditionnal art of music : India, Vietnam, Cambodia, Indonesia and more recently in Japan with his wife Nao MOMITANI, where he went deeper into his knowledge of Nô, Bunraku and Kyôgen.

As a composer, he was in residence, among others, at the Ensemble Musiques Nouvelles, at Castello d'Umbertide (Italy) and at BOZAR-Brussels. In 2003 he received the Musical Prize from the Civitella Ranierei Foudation of New York for his recent works. In 2009, he composed the compulsory work (semifinals) of the Queen Elisabeth Competition of Belgium, violin session. The same year, he was guest composer at the Kitrara Hall in Sapporo (Japan). Summer 2010, the Quartz Ensemble premiered his « Moon’s Desires » at the Seoul festival. In 2011 the composer got a commission form the French government (A Terra Sem Mal, premiered in Paris by the Ensemble Le Balcon), as well as a commission from Ars Musica for a new clarinet concerto (Ayl, performed by the clarinet player Jean-Luc Votano). In 2014 the Royal Philharmonic Orchestra of Liege, the Shanghai Sinfonietta and the Muromachi Ensemble of Tokyo premiered his music. In 2015, the CD "Fragmente" - with the first recording of his Notizen-Fragmente - won the prize of the Octaves de la Musique. Spring 2016, A Butterfly's Dream, for piano and orchestra, was premiered in the framework of the International Queen Elisabeth Contest. Autumn of the same year, Trois Itinérances was premiered at Tokyo and his S(hakuh)achi Kon(nzert) premiered at Ars Musica Festival.

Claude LEDOUX got also a master in "Arts and Sciences of the Music" from the Liège University. Nowadays, he works as a musical journalist and lecturer as well as a Musical Analysis professor at the Conservatoire National Supérieur de Musique de Paris (France) and Composition professor at the Ecole Supérieure des Arts, Conservatoire de Mons (Belgium). Recently he was guest professeur at the Sao Paulo University, and at the Campinas University (Brasil) and was invited in 2013 in China for lectures ad master classes at the Shanghai Conservatory.

Since january 2005, Claude Ledoux is member of the Belgian Royal Academy.