Traditions. All Lithuanians love to sing and extend this love for music to parish life. Advent aims to keep us joyful all the way to Christmas. 11th December was the 3rd Sunday of Advent (the Sunday of Joy). Then it is allowed to play in Catholic church not only the organ but also other musical instruments and sing Advent songs. Every year on this day our school students go to church and after Mass they show their performance together with their parents and teachers.