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Tchaikovsky: Eugen Onegin (Highlights) (1995)
performed by Alex Penda (soprano), Gyorgy Melis (baritone), Ivanka Ninova (mezzo-soprano), Lyubomir Dyakovski (tenor), Nicolai Ghiaurov (bass), Niko Isakov (baritone), Bulgarian National Choir "Svetoslav Obretenov" (choir, chorus), Mike D'Abo (choir, chorus)
composed by Pyotr Il'yich Tchaikovsky -
Rachmaninov: Opera Highlights (2006)
performed by Alexander Tekeliev (bass baritone), Boiko Zvetanov (tenor), Mariana Zvetkova (soprano), Niko Isakov (baritone), Peter Naydenov (bass), Plamen Beykov (bass), Sofia National Opera Chorus (choir, chorus), Sofia National Opera Orchestra
composed by Sergey Rachmaninov