This great music certainly has that Isaac atmosphere in it! Instant buy of course. I'll definetivelly try Antibirth later and I'll listen to this OST very often alongside the other Isaac's OST.
Great work and a special recognition in Misericorde, a great track indeed. Another mentions are: The Thief (Cathedral), Memento Mori, Lucidate (Library), Journey from a Jar to the Sky, Forgotten Lullaby (Secret Room), Ultimort (Chest).........
WOW so many greatness in these tracks!