Obretenov

Varna Mixed Choir, Rousse Mixed Choir, Angel Boukureshtliev Plovdiv Singing Society, Bourgas Mixed Choir, Yambol Children's Choir, Sofia Arfa Female Choir, Kazanlak Children's Choir, Vassil Arnaudov Sofia Chamber Choir, Dobrich Children's Choir, St. Ivan Rilsky Male Choir, Sofia Male Chamber Choir,...

Marta Simidtchieva (cello), Kris Pineda (piano)