Mass hypnosis
Maciej Wojtyszko
The staff members of the affiliate of the Commission on Spectacles and Entertainment of the Lighter Type in Vagankovsky Lane are having an «unquiet day» in chapter 17 of The Master and Margarita and, in some kind of mass hypnosis they start singing together. The song they sing is called Славное море, священный Байкал [Slavnoye morye, sviyatchenny Baikal] or Glorious Sea, Sacred Baikal, a well known exile song.
On this page you can see how Maciej Wojtyszko filmed this scene in his TV-series Mistrz i Małgorzata from 1990.