The most haunting music you ever heard?


I listened to the acoustic version of "Under the Milky Way" from the band "The Church". I can only describe it as haunting. Jokes aside, which might be too much to ask :-), what is the most haunting music/song or cd you have heard?
mike60
"Flaming," Syd Barrett and The Pink Floyd
"Who are you this time?" Tom Waits
"Hall of the Mountain King," Edvard Grieg
"Misguided Angel," Cowboy Junkies
"Revolution #9," Beatles
"Cry Baby Cry," Beatles
"The Glass Spider," David Bowie
"Ghosts," Strawbs
"Cousin Kevin," The Who
"La Notte," Vivaldi
Warren Zevon - My Shit's Fucked Up
Jenny Hoyston and William Whitmore- Hallways of Always. The whole album seems to work to a more and more haunting finish.