Philippe de Vitry By josema Oct 31, 1291 Philippe de Vitry born. Jun 15, 1316 Philippe de Vitry composed : Firmissime fidem; Adesto, sancta trinitas; used in Arras's diocese. Jun 28, 1318 Philippe de Vitry composed: O canenda/Rex quem/Contratenor/rex regum. Was dedicated to king Roberto of Sicilia because crosses. Mar 3, 1320 Philippe de Vitry began to compose motets isorhythmics Jun 12, 1320 Philippe de Vitry wrote Ars Nova. Jun 9, 1361 Philippe de Vitry died. Apr 16, 1988 Deutsche Harmonia Mundi public : Philippe de Vitry, motets and chansons. Sequentia. Mar 23, 1990 Deutsche Harmonia Mundi publics : Philippe de Vitry and the Ars Nova.