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Pyotr Leschenko, a renowned Russian singer and composer of the 1930s, stands at the heart of the intriguing documentary series "Everything That Was..". Through archival footage, interviews, and expert analysis, this captivating exploration delves into Leschenko's extraordinary life, spanning his triumphs as a musical icon, his tumultuous encounters during World War II, and the enduring impact of his timeless artistry on Russian culture and beyond.