"The Sound of Silence" by Simon & Garfunkel
It gives me the creeps. No one gets it, and I can't explain, but I just feel all icky whenever I hear it. Same kind of icky I get whenever I watch the original Willy Wonka & the Chocolate Factory movie.
However, I didn't know until I just did some research that S&G wrote "The Sound of Silence" in 1964 following the assassination of President Kennedy. Interesting. Maybe I should give it another listen. Or not. I seriously just shuddered. The ONLY time I can tolerate the song is in the scene in Old School when Will Ferrel has been hit with the tranquilizer dart and falls in the pool.