- Children’s Choir «Kokek» (Almaty, Republic of Kazakhstan), artistic director – Natalia Marchenko
- Concert Сhoir of boys and young men «Orlyata» (Kirov, Russia), artistic director – Irina Halyavina
- KaMu Girls Choir (Kaarina, Finland), artistic director – Pekka Nebelung
- Choir «Kapel'» (Urban-type settlement Selyatino, Moscow region, Russia), artistic director – Oksana Krutieva
- Music and Art School’s Children’s Choir «Lielvārde» (Lielvarde, Latvia), artistic director – Baiba Klepere
- Children’s Chamber Choir «Canzona» (Moscow, Russia), artistic director – Maxim Popov
- Хiaman Media Group Students’ Choir «Happy Childhood» (Xiamen, China), artistic director – Zhang Jinjin, conductor – Li Jun
- Choir «Campanelli» of Children’s Art School № 18 (Novosibirsk, Russia), artistic director – Olga Chernysheva
- Youth Choir «Alatau» of Almaty Music College named after P.I. Tchaikovsky (Almaty, Republic of Kazakhstan), artistic director – Ziada Nakibaeva
- Capella of Boys and Young Men of the Sverdlovsk State Children’s Philharmonic (Yekaterinburg, Russia), artistic director – Vyacheslav Kulmametiev, conductor – Olga Chernova
- Choir «Parus» (Nizhny Novgorod, Russia), artistic director – Galina Bobkova
- Concert Choir «Fantasy» (Serov, Sverdlovsk region, Russia), artistic director – Anatolii Tushkov
- Vocal and Choral Group «Scarlet Sails» of the Complex Center for Social Service of the Population (Priozersk, Russia), artistic director – Irina Romanova
- Academic Choir of the Vocal Department of the Gnessins Musical College of the Gnessins RAM (Moscow, Russia), artistic director – Elena Kolmakova
- Student Choir of the Conductor and Choral Department of the Academy of Music, Theater and Fine Arts, (Kishinev, Republic of Moldova), artistic director – Ilona Stepan
- Choir «Rosinki» of Central Children’s Art School (Khimki city district, Moscow region, Russia), artistic director – Anna Melnikova
- Choral collective «HEAVENLY SWALLOWS» (Kirov, Russia), artistic director – Larisa Gaida
- Children’s Choir «Aurora» of Children’s Art School named after V.V. Krainev (Moscow, Russia), artistic director – Anastasia Belyaeva
- Chamber Choir «Cantares» of the St. Petersburg State University of Telecommunications named after prof. M.A. Bonch-Bruevich (St. Petersburg, Russia), artistic director – Ekaterina Stepanova
- Children’s Choir «Little Masters» of Children’s Art School «Premiere» School № 827 (Moscow, Russia), artistic director – Eugenia Bukharova
- Students Choir of Mozyr State Music College (Mozyr, Gomel region, Republic of Belarus), artistic director – Svetlana Bayova
- Concert Choir of the Lyceum of Arts «St. Petersburg» (St. Petersburg, Russia), artistic director – Natalia Nikonova
- Choir Studio «Harmony» of the Palace of Children’s (Youth) Creativity of the Kirov district of St. Petersburg (St. Petersburg, Russia), artistic director – Svetlana Englina
- Middle choir of the Children’s Choir Studio «Iskra» of the Palace of Children and Youth Creativity «On Lenskaya street» of the Krasnogvardeysky District of St. Petersburg (St. Petersburg, Russia), artistic director – Ksenia Komarova
- Student choir «Cantabile» of the Leningrad Regional College of Culture and Art (St. Petersburg, Russia), artistic director – Irina Batischeva
- Children’s Choir «Rassvet» of Children’s Music School named after M.I. Glinka (Vsevolozhsk, Leningrad region, Russia), artistic director – Tatyana Gluzd
- Junior Choir «Nevskaya Dominanta» of Children’s Music School named after M.I. Glinka (St. Petersburg, Russia), artistic director – Victoria Gainutdinova
- Cadet Chorus of the Military Academy of Communications named after Marshal of the Soviet Union S.B. Budyonny (St. Petersburg, Russia), artistic director – Konstantin Andrianov
- Junior Choir «Funny Voices» of the Children’s Exemplary Choral Studio «Kamerton» (St. Petersburg, Russia), artistic director – Natalia Mazko