Today I was thinking of "Believe me, If All Those Endearing Young Charms." The first verse of that is perfect beauty, in my opinion. Music and lyrics perfectly blended.

Franz Schubert wrote a song cycle called Winterreise. Some say it's the most perfect set of songs ever written, though others criticize the lyrics as weak. But the music is great throughout. I especially like the first song, "Gute Nacht." Link below to a good version of it, Youtube, about 6 minutes long. Somber and haunting:

http://www.youtube.com/watch?v=Tc_GCguYgHw&feature=related

If that song sounds familiar, maybe you heard something like it in the soundtrack to Barry Lyndon. One of the pieces used in that score was the second movement of Schubert's Piano Trio #2. Has similarities to the first song in the Wintereisse cycle. Bunch of recordings of the Trio at the link below:

http://www.youtube.com/watch?v=Xczdmh8elFs