Hans Leenders is the artistic director of the professional chamber choir Studium Chorale and vocal ensemble Cantatrix and artistic advisor of the Dutch Gregorian Chant festival and the festival L’Europe & l’Orgue. He is a principal teacher of organ at the Maastricht Conservatory, conductor of the conservatory choir and Basilica choir Maastricht, and teaches Gregorian chant during summer courses at the Folkwang-University of Arts in Essen, Germany. Hans Leenders is the principal organist of the Basilica of our Lady in Maastricht and organist-titular in the Kopermolen in Vaals; guest conductor with Radio Choir Slovenia, Groot Omroepkoor, Cappella Amsterdam, Europa Cantat and several conservatories in Europe. He has conducted orchestral productions with Philharmonie Zuidnederland, Symfonieorkest Vlaanderen, Concerto d’Amsterdam, Florilegium Musicum and Ensemble ‘88, specialized in contemporary music. As a composer he is known especially for his vocal music, editions by Ascolta, Harmonia and De Haske.