Saint-Preux (born 1950) is a French composer of contemporary classical music which also combines elements from popular music and electronic music. His real name is Christian Saint-Preux Langlade. By 1968 he had already released several 45 rpm recordings of his compositions, including Une étrange musique (A Strange Music) which reached #71 on the French charts that year. In August 1969, he took part in Poland's Sopot International Song Festival with his first major composition La valse de l'enfance (The Waltz of Youth). The song was Luxembourg's entry in the festival and was sung by Henri Seroka with Saint-Preux conducting the symphony orchestra. The song won the Grand Prix de la Presse award at the festival and was released in that same year on Seroka (Festival FX 1583) and as a single on the EMI/Odeon label. While in Poland he composed what was to become his biggest hit, Concerto pour une Voix (Concerto for One Voice).