Choirs Christophorus Children‘s Choir Altensteig Germany Pueri Cantores St. Aegidien Brunswick Germany Children’s Choir April Russia Youth Choir of the Music School of Vienna Austria Oulaisten Nuorisokuoro Finland Youth Choir Vivat Musica Ukraine Krasnoyarsk City Children’s Choir Russia Gothenburg Cathedral Youth Choir Sweden Gimnazija Kranj Mixed Choir Slovenia Göttingen Boys Choir Germany Youth Choir of Berlin State Opera Germany Amics de la Unió Spain Girls Choir Skowroneczki Poland Qatar Junior Choir Qatar Youth Choir Marktkirche Hanover Germany Youth Choir St. Marien Osnabrück Germany Bodra Pessen Girls Choir Bulgaria Girls Choir Canzone Estonia Choir of the Children’s University Cologne Germany