 He has also been the timpanist of the Colonne Orchestra since 1973.In addition to performing as an instrumentalist and being a composer Probst gives instruction in percussion, chamber music, and musical education in various Parisian conservatories.Foremost among his compositions is his opera "Maximilian Kolbe", to a libretto by Eugène Ionesco, about the Polish priest who died to save a fellow inmate in Auschwitz.