Offertorium De Beata Maria Virgine. Par MOZART LEOPOLD. In the 17th and 18th centuries, Salzburg, where Leopold Mozart was Assistant Court Music Director, was a center for polyphonic Offertory settings and multimovement offertory concerti, which developed into a main genre of Catholic liturgical music in the south German region. The Salzburg Cathedral seems an obvious choice, which the 'solemn' orchestration with trumpets and timpani would support. / Musique religieuse / Répertoire / Solo S, Choeur SATB, 2 Clarinettes, Timbales, 2 Vi