Russia's 'Doomsday Radio' station, UVB-76, has reactivated, broadcasting Tchaikovsky's 'Swan Lake' and a reworked Soviet song allegedly celebrating an attack on Kyiv. The broadcast also included muffled voices and the station's usual buzzing sound, fueling speculation of a hack or a cryptic message. 'Swan Lake' has historical associations with Soviet instability, and music broadcasts are rare for UVB-76, occurring only a few times in its history.