4 Fidelio, Op. 72, Act I: "O welche Lust" (Prisoners' Chorus) Georgi Robev, Sofia Philharmonic Orchestra, Bulgarian National Choir & Ludwig van Beethoven
5 Prince Igor: Boyar's Chorus Bulgarian National Choir, Sofia Philharmonic Orchestra, Georgi Robev, Rouslan Raychev & Aleksandr Borodin