Boys' and youth choir "Ąžuoliukas". Vilnius, Lithuania
Boys' and youth choir "Varpelis". Kaunas, Lithuania
Boys' and youth choir "Gintarėlis". Klaipėda, Lithuania
Wiesbaden boys choir. Germany
Mixed choir "Canticum Novum" of K.Marcinkovskis
lyceum and gymnasium. Poznan, Poland
The Children’s Choir "Viola". Žamberk, Czechia
