Mozart Opera Arias for Mezzo-Soprano and Orchestra – Irena Petkova (mezzo-soprano), Plovdiv Philharmonic Orchestra, Nayden Todorov (conductor), 1999.
Mozart Opera Arias for Mezzo-Soprano and Orchestra – Irena Petkova (mezzo-soprano), Plovdiv Philharmonic Orchestra, Nayden Todorov (conductor), 1999