Ughh this is driving me CRAZY...it's an old 60s or maybe even late 50s? song...there's definitely a male and female vocal...It's like a very dark and foreboding song about some kind of monster or something evil. The song "One of these Mornings" by Moby made me think of it...it used to be an obsession of mine but now I can't even think of it to find it gaain...