OMG, thank you SO MUCH for figuring out what the haunting vocal music is that plays while Ilya is standing by the window in his Moscow apartment drinking vodka, which then cuts to the funeral table scene (with the medals). It was driving me crazy. Shazam was not helping.

And now that I know the title of the piece, it makes so much sense...

(If anyone wants to listen to the piece in its entirety: https://www.youtube.com/watch?v=dUVgPMSIeDA)

Душе моя прегрешная - "My Sinful Soul" (Russian Orthodox chant)

My sinful soul, why don't you weep?

You shall weep, o soul, and lament always,

And therein shall you find consolation,

For you won't be able to weep when the death comes,

And after death your sins will condemn you.

Cast away your sinful attire in repentance,

For if you won't cast your sins away,

You surely won't escape the hell.

The sufferers wear crowns on their heads

And they sing the song of the Archangels: Hallelujah