Unknown music from an old version of Nosferatu (1922)

I know the original composer for this movie was Hans Erdmann and I’ve heard his original score through the Eureka Master of Cinema DVD that was released in 2007 in UK.
Before that edition, since 1922, the movie was shown and released through the decades accompanied with several different scores.

The one that I’m posting here is a weird piano score from an incomplete, unrestored version of the movie I found for the first time in my local library on VHS, full of strange but fascinating pieces. Actually it is the only version, with the exception of the original one, that I’ve ever heard and.. I love it!

I’m posting this here as I hope someone can recognize some piece (I believe it contains music by different composers) and can throw me a composer’s name, a title (or a link) so that I can find better versions of the pieces this score is composed of. As you’ll hear, the quality of the recording is pretty low (pretty bad at some point) as I’ve ripped this from an AVI file I found on the net years ago (I was happy it contained the same score that was in that old copy I had taken at the library).

You recognize something? Let me know!

fededesign.altervista.org/@nosferatu/1922_Nosferatu_(unknown_score).mp3
(if it doesn’t work, click on the link and then click on the word "qui" in the following page)

The whole score is on a single MP3 file (41,6 MB, length 01:00:40).

I assume this score was made for English (or American) versions of the movie as both versions I found this score in contains English texts. At some point during the film we see the main character writing a letter to his wife: while the close-up of the letter shows German text in the original version, in these two versions the text is in English.