Donum is a mixed choir of the parish of St. Nicholas in Varaždin, and its members are regular leaders of liturgical singing at parish masses. It consists of about 30 members, some of whom have been active since the very beginning of the choir. In addition to regular performances at festive parish celebrations, the choir organizes Christmas and spiritual concerts almost every year, participates in festivals, and performs in other parishes, including abroad. The choir leader is Marija Košćak, along with the musician Marta Kranjčec and her deputy Tereza Mlinarić.