"Unchained Melody" (written by Alex North & Hy Zaret) is one of the most beautiful and emotional songs of all-time. Most of you I'm sure have heard the Righteous Brothers' classic rendition of it. If not, here it is.
There are over 500 versions of this song, but maybe the best, certainly the most powerful is by Vito & the Salutations. This is a master class in interpretation. I warn you -- you're going to need a hanky.