We don’t know much about Darren Aronofsky’s new film Mother!, aside from our own Ignatiy Vishnevetsky calling it “the most irrational piece of filmmaking that [he] has produced since his black-and-white debut, Pi,” after a screening at the Toronto International Film Festival. In the video above, we did manage to pry one detail out of Aronofsky himself about the filmmaking process itself: He rehearsed with his actors for three months before filming, a full month longer than the actual filming lasted.