Known best as a composer of contemporary art music, Dufour wrote such acclaimed electroacoustic pieces as "In Paradisum," "Je Voulais Parler des Oiseaux," and "The Blob." He pioneered a pre-recorded, speaker-based genre of concert music known as "Acousmatic music." After training at the Paris Conservatoire, he began a music teaching career at the Paris Boulogne-Billancourt.