The most haunting music you ever heard?

I'll go with Egoben on this one. Wish all of my cds sounded as good as Wrecking Ball (Emmylou Harris) and Teatro (Willie Nelson). Lanois creates a compelling soundscape in both. Also, both are excellent albums. Of course, he has taken the helm at many more.
Can it be that Lanois inspires or, by collaboration, helps his artists to achieve greater heights? I think so.

Oh Mercy is Dylan's most underrated post -70s record IMHO.

Pet Cemetery was haunting. No soundtrack required.

"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.

"strange fruit" - cassandra wilson