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	Simeon Pironkov (conductor) Simeon Pironkov - Requiem for an Unknown Young Man for 13 strings (1968) Simeon Pironkov (conductor) , Ensemble `Sofia Soloists` 1981 Balkanton (1) Simeon Pironkov - `True apology for Socrates` for bass, percussion and strings, on the eponymous text by Kostas Varnalis (1967) Pavel Gerdjikov (bariton), Simeon Pironkov (conductor) , Ensemble `Sofia Soloists` 1981 Balkanton (1) Simeon Pironkov - Ballet Music in Memory of Stravinsky (1972) Simeon Pironkov (conductor) , Bulgarian Television and Radio Symphony Orchestra (0)