Really Eerie Music (R.E.M.)

Hey folks, I would like to hear some more really eerie music. Music that brings you nightmares, as worse as possible. Can anyone give me some recommends of really eerie music that I haven't heard yet. Especially in the classical field there's a lot of music that I haven't heard yet. But any recommend is much appreciated. These are some records which I really love and I think that are really eerie: Naked City - Grand Guignol Painkiller - Execution Ground Kronos Quartet - Black Angels Keiji Haino - Watasi Dake Bernard Herrmann - Psycho OST Goblin - Suspiria OST Please, anyone, let me know of some more really eerie nightmarish music out there. Music you should not play at night. Any record I have not mentioned. I need help! Thanks, Kris