This is the most beautiful opera piece I've ever heard.
If someone were to wander into a music forum and hear just one song, this is the one I hope it would be. I will always be grateful to the person who shared this song with me so that I could enjoy it. Thank you.
"Marietta's Lied" - Die tote Stadt, an opera by Erich Wolfgang Korngold http://en.wikipedia.org/wiki/Die_tote_Stadt
sung by Kiri Te Kanawa