
Sunshine Vocal Studio of „Paisii Hilendarski“ Community Centre, Balchik, Bulgaria Conductor: Valentina Georgieva, PhD
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Chernomorski zvutsi Mixed choir Balchik, Bulgaria Conductor: Valentina Georgieva, PhD
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Spectrum Acapella Group Sofia, Bulgaria
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Perunika female choir Stockholm, Sweden Conductor: Michael Deltchev
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Detska kitka Children’s choir Plovdiv, Bulgaria Conductor: Yana Deliradeva
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Ad libitum Cappella Sofia, Bulgaria Conductor: Maria Valchanova
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Trayana glas Vocal studio Stara Zagora, Bulgaria Conductor: Lilyana Doicheva
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Folk Choir of the Goce Delchev Ensemble, Sofia, Bulgaria Conductor: Marek Dyakov
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Styvar's children's choir Trinec, Czech Republic Conductor: Alena Kostkova
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Cantus chamber choir St. Petersburg, Russia Conductor: Darya Goloushkina
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Perpetuum mobile Children's choir Kaunas, Lithuania Conductor - Beata Kijauskienė
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Ave musica choir Odessa, Ukraine Condutor: Sergii Savenko
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Solo musica Children's choir Odessa, Ukraine Condutor: Levgeniia Bondar
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The choir of the conservatory of municipality of Kalamaria Thessaloniki, Conductor: Irena Krajczyk
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Female Choir of the Estonian Academy of Sciences, Tallinn, Estonia Conductor: Andrus Siimon
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Zhar-Sokol Female choir Moscow, Russia Conductor: prof. Liubov Zharova
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Male Choir of the Estonian Academy of Sciences, Tallinn, Estonia Conductor: Andrus Siimon |

Mikra Mixed choir, Plagiari, Thermi, Greece Conductor: Elefteria Metaxa
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 „Jiricky“ Children's choir Mlada Boleslav, Czech Republic
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 Ioan Dimitrie Chirescu Mixed choir Cerna voda, Romania Conductor: Dincu Anghel
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 City mixed choir Gortinija Gevgelija, Macedonia Conductor: Ilija Atanasov
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 Rae Chamber Choir Harjumaa, Estonia Conductor: Alice Pehk
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