Thanks for the feedback, Jahful .)))))
I didn’t really have any intention to spice it up with psychedelic vibes — most of them just wouldn’t fit in there .)
As for piano sounds, hm. You’re right, I should have been a bit more creative 
PS
Speaking of fundamentals, I wanted to stick to more or less simple tertian harmony to avoid that spooky 2nd/4th sound. Otherwise, it would just sound freaking weird, like a nightingale on DMT xD
Basic chords would sound TOO simple, so I chose Em11 followed by Bm9.