Help Identifying Piece

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Since it was Halloween last night I watched a horror movie, in this case Black Christmas.

In the movie, there's a clip of a piano recital and I don't know what this piece is.  It sounds sort of like Messiaen, but also sounds American (or Canadian, since the film was shot in Canada).  Anybody recognize it?  It starts at 29:44

[visitor]

I suspect it may be original by Carl Zittrer for the film, he has the compositional chops to pull that off,citations and credits for a lot of stuff in that era can have holes , I recall seeing similar exact question asked on reddit, no answer .
He and Paul Zaza collaborated quite a bit for these projects it seems.
Zittrer seems to have a Twitter might just ask him, from a practical standpoint I see no copyright or royalty litigation ever mentioned and without crediting it I can only surmise that Zittrer is credited for the score and thus that cool piece
Again might ask him if he replies I think his twitter is legit , might see if Zaza is still alive and maybe reach our and ask him again he may have done the playing for it and other parts of the score, ie they were involved w prom night the 70s slasher and there's a piano suite title in the o a t and I listened to some of it, different character but still sounded really good

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I don't have Twitter, do you mind asking?  I wonder if it's Sessions.

[j_tour]

Right, that was Keir Dullea in one of the school's practice rooms, IIRC.  I can't look at the clip easily, but that must be it.  Fantastic movie.

I could have sworn I figured out whose composition (or maybe improvisation) it was a long time ago, but it's definitely not Messiaen.  And I definitely don't remember whatever conclusion I came to.

Anyway, I don't really "have" Twitter either, except for some account I no longer remember the login details for. 

But that's interesting enough to make me want to ask Zittrer myself.

Might get more of an "official" response if someone with the power to do like a group post from "Pianostreet.com"  I highly doubt the producers know or recall that kind of detail.  I don't remember the director's name, but if he or she is still around, could even be a better or equal source of information.  The editor might remember as well, or the sound designer.