The American International School Vienna in Vienna’s 19th district is a college-preparatory school for children between the ages of four and eighteen from 81 nations, promoting the arts and sport to ensure its pupils’ holistic development. The Middle School Choir is made up of 11-to-14-year-old pupils and sings works in a wide range of musical styles and gives four concerts annually – among them the International Advent Singing! Choir leader Kathy Heedles has been in charge of the choir since 1986.