Sébastien de, an eminent French musician, born A.D. 1660. In early life he had been prebendary and chapel-master of the cathedral church of Strasbourg; he afterwards became grand chaplain and maître de chapelle in the cathedral of Meaux. He wrote a work entitled Prodromus Musicalis, 2 vols. folio; and was also the author of Dictionnaire de Musique, first printed at Amsterdam, in folio, 1703. At the end of this useful book there is a catalogue of authors ancient and modern, to the number of nine hundred, who have written on music. It is also interspersed with many curious observations on the history of music. His own compositions were chiefly sacred music. He died August 10, 1730.