Dark Is the Night, known in Russian as Tyomnaya noch, was written in 1943 by composer Nikita Bogoslovsky and lyricist Vladimir Agatov for the Soviet war film Two Soldiers, where Mark Bernes performed it as a soldier writing home at night. It became one of the most beloved songs of the Second World War in the USSR. Decades later, slowed and reverb edits of old songs spread across YouTube and TikTok, and this melancholic melody proved a natural fit, giving a familiar wartime ballad a modern, dreamlike afterlife.