Andrei somehow discovered that the paranoic Tsyganochka playing as the soundtrack seems to be Novi Novog’s Philips Glasses from Solos (FWM 53) CD—which piece he believes is an homage to Philip Glass, while I suspect is just named after a pair of glasses belonging to some obscure Philip, but maybe it is indeed a version of some Glass's composition.
Novi Novog, an American multi-genre violist and composer who once played with Zappa, might boast an impressive discography but does not, keeping a very low profile. She is great, in my opinion. Here is the YouTube channel of String Planet, her current band.
P. S. Novi confirmed that this is her piece, not Glass's.